cef/libcef/browser/extensions/extension_system.cc
Marshall Greenblatt 5ce52bd775 Add NetworkService support for extensions and downloads (see issue #2622).
To test:
- All tests pass with NetworkService disabled. DownloadTest.*, ExtensionTest.*
  and PluginTest.* tests pass with NetworkService enabled.
- The PDF extension displays a file, and the download and print buttons work.
2019-05-01 17:10:52 -04:00

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// Copyright 2015 The Chromium Embedded Framework Authors.
// Portions copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "libcef/browser/extensions/extension_system.h"
#include <string>
#include "libcef/browser/extension_impl.h"
#include "libcef/browser/extensions/pdf_extension_util.h"
#include "libcef/browser/extensions/value_store/cef_value_store_factory.h"
#include "libcef/browser/thread_util.h"
#include "libcef/common/extensions/extensions_util.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/json/json_string_value_serializer.h"
#include "base/path_service.h"
#include "base/strings/string_tokenizer.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task/post_task.h"
#include "base/threading/thread_restrictions.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/chrome_paths.h"
#include "components/crx_file/id_util.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/plugin_service.h"
#include "content/public/browser/render_process_host.h"
#include "extensions/browser/api/app_runtime/app_runtime_api.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/info_map.h"
#include "extensions/browser/notification_types.h"
#include "extensions/browser/null_app_sorting.h"
#include "extensions/browser/quota_service.h"
#include "extensions/browser/renderer_startup_helper.h"
#include "extensions/browser/runtime_data.h"
#include "extensions/browser/service_worker_manager.h"
#include "extensions/browser/state_store.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension_messages.h"
#include "extensions/common/file_util.h"
#include "extensions/common/manifest_constants.h"
#include "extensions/common/manifest_handlers/mime_types_handler.h"
#include "extensions/common/switches.h"
#include "net/base/mime_util.h"
using content::BrowserContext;
using content::BrowserThread;
namespace extensions {
namespace {
// Implementation based on ComponentLoader::ParseManifest.
std::unique_ptr<base::DictionaryValue> ParseManifest(
const std::string& manifest_contents) {
JSONStringValueDeserializer deserializer(manifest_contents);
std::unique_ptr<base::Value> manifest(deserializer.Deserialize(NULL, NULL));
if (!manifest.get() || !manifest->is_dict()) {
LOG(ERROR) << "Failed to parse extension manifest.";
return NULL;
}
// Transfer ownership to the caller.
return base::WrapUnique(
static_cast<base::DictionaryValue*>(manifest.release()));
}
void ExecuteLoadFailure(CefRefPtr<CefExtensionHandler> handler,
cef_errorcode_t result) {
if (!handler)
return;
if (!CEF_CURRENTLY_ON_UIT()) {
CEF_POST_TASK(CEF_UIT, base::BindOnce(ExecuteLoadFailure, handler, result));
return;
}
handler->OnExtensionLoadFailed(result);
}
void LoadExtensionOnUIThread(base::WeakPtr<CefExtensionSystem> context,
std::unique_ptr<base::DictionaryValue> manifest,
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
if (!CEF_CURRENTLY_ON_UIT()) {
CEF_POST_TASK(CEF_UIT, base::BindOnce(LoadExtensionOnUIThread, context,
base::Passed(std::move(manifest)),
root_directory, internal,
loader_context, handler));
return;
}
if (context) {
context->LoadExtension(std::move(manifest), root_directory, internal,
loader_context, handler);
}
}
void LoadExtensionWithManifest(base::WeakPtr<CefExtensionSystem> context,
const std::string& manifest_contents,
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
CEF_REQUIRE_BLOCKING();
std::unique_ptr<base::DictionaryValue> manifest =
ParseManifest(manifest_contents);
if (!manifest) {
LOG(WARNING) << "Failed to parse extension manifest";
ExecuteLoadFailure(handler, ERR_INVALID_ARGUMENT);
return;
}
LoadExtensionOnUIThread(context, std::move(manifest), root_directory,
internal, loader_context, handler);
}
void LoadExtensionFromDisk(base::WeakPtr<CefExtensionSystem> context,
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
CEF_REQUIRE_BLOCKING();
base::FilePath manifest_path = root_directory.AppendASCII("manifest.json");
std::string manifest_contents;
if (!base::ReadFileToString(manifest_path, &manifest_contents)) {
LOG(WARNING) << "Failed to read extension manifest from "
<< manifest_path.MaybeAsASCII();
ExecuteLoadFailure(handler, ERR_FILE_NOT_FOUND);
return;
}
LoadExtensionWithManifest(context, manifest_contents, root_directory,
internal, loader_context, handler);
}
} // namespace
CefExtensionSystem::CefExtensionSystem(BrowserContext* browser_context)
: browser_context_(browser_context),
initialized_(false),
registry_(ExtensionRegistry::Get(browser_context)),
renderer_helper_(
extensions::RendererStartupHelperFactory::GetForBrowserContext(
browser_context)),
weak_ptr_factory_(this) {
InitPrefs();
}
CefExtensionSystem::~CefExtensionSystem() {}
void CefExtensionSystem::Init() {
DCHECK(!initialized_);
// There's complexity here related to the ordering of message delivery. For
// an extension to load correctly both the ExtensionMsg_Loaded and
// ExtensionMsg_ActivateExtension messages must be sent. These messages are
// currently sent by RendererStartupHelper, ExtensionWebContentsObserver, and
// this class. ExtensionMsg_Loaded is handled by Dispatcher::OnLoaded and adds
// the extension to |extensions_|. ExtensionMsg_ActivateExtension is handled
// by Dispatcher::OnActivateExtension and adds the extension to
// |active_extension_ids_|. If these messages are not sent correctly then
// ScriptContextSet::Register called from Dispatcher::DidCreateScriptContext
// will classify the extension incorrectly and API bindings will not be added.
// Inform the rest of the extensions system to start.
ready_.Signal();
content::NotificationService::current()->Notify(
NOTIFICATION_EXTENSIONS_READY_DEPRECATED,
content::Source<BrowserContext>(browser_context_),
content::NotificationService::NoDetails());
// Add the internal PDF extension. PDF loading works as follows:
// 1. PDF PPAPI plugin is registered to handle kPDFPluginOutOfProcessMimeType
// in libcef/common/content_client.cc ComputeBuiltInPlugins.
// 2. PDF extension is registered and associated with the "application/pdf"
// mime type by the below call to AddExtension.
// 3. A page requests a resource with the "application/pdf" mime type. For
// example, by loading a PDF file.
// 4. CefResourceDispatcherHostDelegate::ShouldInterceptResourceAsStream
// or PluginResponseInterceptorURLLoaderThrottle (NetworkService)
// intercepts the PDF resource load in the browser process, generates a
// unique View ID that is associated with the resource request for later
// retrieval via MimeHandlerStreamManager and the
// chrome.mimeHandlerPrivate JS API (extensions/common/api/
// mime_handler_private.idl), and returns the unique View ID via the
// |payload| argument.
// 5. The unique View ID arrives in the renderer process via
// ResourceLoader::didReceiveData and triggers creation of a new Document.
// DOMImplementation::createDocument indirectly calls
// RendererBlinkPlatformImpl::getPluginList to retrieve the list of
// supported plugins from the browser process. If a plugin supports the
// "application/pdf" mime type then a PluginDocument is created and
// CefContentRendererClient::OverrideCreatePlugin is called. This then
// indirectly calls CefContentRendererClient::CreateBrowserPluginDelegate
// to create a MimeHandlerViewContainer.
// 6. A MimeHandlerViewGuest and CefMimeHandlerViewGuestDelegate is created in
// the browser process.
// 7. MimeHandlerViewGuest navigates to the PDF extension URL.
// 8. Access to PDF extension resources is checked by
// CefExtensionsBrowserClient::AllowCrossRendererResourceLoad.
// 9. PDF extension resources are provided from bundle via
// CefExtensionsBrowserClient::MaybeCreateResourceBundleRequestJob or
// CefExtensionsBrowserClient::LoadResourceFromResourceBundle,
// CefContentBrowserClient::RegisterNonNetworkSubresourceURLLoaderFactories
// (NetworkService) and CefComponentExtensionResourceManager.
// 10.The PDF extension (chrome/browser/resources/pdf/browser_api.js) calls
// chrome.mimeHandlerPrivate.getStreamInfo to retrieve the PDF resource
// stream. This API is implemented using Mojo as described in
// libcef/common/extensions/api/README.txt.
// 11.The PDF extension requests a plugin to handle
// kPDFPluginOutOfProcessMimeType which loads the PDF PPAPI plugin.
// 12.Routing of print-related commands are handled by ChromePDFPrintClient
// and CefPrintRenderFrameHelperDelegate in the renderer process.
// 13.The PDF extension is granted access to chrome://resources via
// CefExtensionWebContentsObserver::RenderViewCreated in the browser
// process.
if (PdfExtensionEnabled()) {
LoadExtension(ParseManifest(pdf_extension_util::GetManifest()),
base::FilePath(FILE_PATH_LITERAL("pdf")), true /* internal */,
nullptr, nullptr);
}
initialized_ = true;
}
void CefExtensionSystem::LoadExtension(
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
CEF_REQUIRE_UIT();
CEF_POST_USER_VISIBLE_TASK(
base::BindOnce(LoadExtensionFromDisk, weak_ptr_factory_.GetWeakPtr(),
root_directory, internal, loader_context, handler));
}
void CefExtensionSystem::LoadExtension(
const std::string& manifest_contents,
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
CEF_REQUIRE_UIT();
CEF_POST_USER_VISIBLE_TASK(base::BindOnce(
LoadExtensionWithManifest, weak_ptr_factory_.GetWeakPtr(),
manifest_contents, root_directory, internal, loader_context, handler));
}
// Implementation based on ComponentLoader::Add.
void CefExtensionSystem::LoadExtension(
std::unique_ptr<base::DictionaryValue> manifest,
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
CEF_REQUIRE_UIT();
// Internal extensions don't have a loader context. External extensions should.
#if DCHECK_IS_ON()
if (internal) {
DCHECK(!loader_context);
} else {
DCHECK(loader_context);
}
#endif
ComponentExtensionInfo info(manifest.get(), root_directory, internal);
const Extension* extension = LoadExtension(info, loader_context, handler);
if (!extension)
ExecuteLoadFailure(handler, ERR_FAILED);
}
// Implementation based on ExtensionService::RemoveComponentExtension.
bool CefExtensionSystem::UnloadExtension(const std::string& extension_id) {
CEF_REQUIRE_UIT();
ExtensionMap::iterator it = extension_map_.find(extension_id);
if (it == extension_map_.end()) {
// No CEF representation so we've already unloaded it.
return false;
}
CefRefPtr<CefExtensionImpl> cef_extension =
static_cast<CefExtensionImpl*>(it->second.get());
// Erase first so that callbacks can't retrieve the unloaded extension.
extension_map_.erase(it);
cef_extension->OnExtensionUnloaded();
scoped_refptr<const Extension> extension(
registry_->GetInstalledExtension(extension_id));
UnloadExtension(extension_id, UnloadedExtensionReason::UNINSTALL);
if (extension.get()) {
registry_->TriggerOnUninstalled(
extension.get(), extensions::UNINSTALL_REASON_COMPONENT_REMOVED);
}
return true;
}
bool CefExtensionSystem::HasExtension(const std::string& extension_id) const {
return !!GetExtension(extension_id);
}
CefRefPtr<CefExtension> CefExtensionSystem::GetExtension(
const std::string& extension_id) const {
CEF_REQUIRE_UIT();
ExtensionMap::const_iterator it = extension_map_.find(extension_id);
if (it != extension_map_.end())
return it->second;
return nullptr;
}
CefExtensionSystem::ExtensionMap CefExtensionSystem::GetExtensions() const {
CEF_REQUIRE_UIT();
return extension_map_;
}
void CefExtensionSystem::OnRequestContextDeleted(CefRequestContext* context) {
CEF_REQUIRE_UIT();
DCHECK(context);
// Make a copy of the map because UnloadExtension will modify it.
// Don't add any references to |context|.
ExtensionMap map = extension_map_;
ExtensionMap::const_iterator it = map.begin();
for (; it != map.end(); ++it) {
CefRefPtr<CefExtensionImpl> cef_extension =
static_cast<CefExtensionImpl*>(it->second.get());
if (cef_extension->loader_context() == context)
UnloadExtension(it->first);
}
}
void CefExtensionSystem::Shutdown() {
CEF_REQUIRE_UIT();
// Only internal extensions should exist at this point.
#if DCHECK_IS_ON()
ExtensionMap::iterator it = extension_map_.begin();
for (; it != extension_map_.end(); ++it) {
CefRefPtr<CefExtensionImpl> cef_extension =
static_cast<CefExtensionImpl*>(it->second.get());
DCHECK(!cef_extension->loader_context());
}
#endif
extension_map_.clear();
}
void CefExtensionSystem::InitForRegularProfile(bool extensions_enabled) {
DCHECK(!initialized_);
service_worker_manager_.reset(new ServiceWorkerManager(browser_context_));
runtime_data_.reset(new RuntimeData(registry_));
quota_service_.reset(new QuotaService);
app_sorting_.reset(new NullAppSorting);
}
void CefExtensionSystem::InitForIncognitoProfile() {
NOTREACHED();
}
ExtensionService* CefExtensionSystem::extension_service() {
return nullptr;
}
RuntimeData* CefExtensionSystem::runtime_data() {
return runtime_data_.get();
}
ManagementPolicy* CefExtensionSystem::management_policy() {
return nullptr;
}
ServiceWorkerManager* CefExtensionSystem::service_worker_manager() {
return service_worker_manager_.get();
}
SharedUserScriptMaster* CefExtensionSystem::shared_user_script_master() {
return nullptr;
}
StateStore* CefExtensionSystem::state_store() {
return state_store_.get();
}
StateStore* CefExtensionSystem::rules_store() {
return rules_store_.get();
}
scoped_refptr<ValueStoreFactory> CefExtensionSystem::store_factory() {
return store_factory_;
}
InfoMap* CefExtensionSystem::info_map() {
if (!info_map_.get())
info_map_ = new InfoMap;
return info_map_.get();
}
QuotaService* CefExtensionSystem::quota_service() {
return quota_service_.get();
}
AppSorting* CefExtensionSystem::app_sorting() {
return app_sorting_.get();
}
// Implementation based on
// ExtensionSystemImpl::RegisterExtensionWithRequestContexts.
void CefExtensionSystem::RegisterExtensionWithRequestContexts(
const Extension* extension,
const base::Closure& callback) {
// TODO(extensions): The |incognito_enabled| value should be set based on
// manifest settings.
base::PostTaskWithTraitsAndReply(
FROM_HERE, {BrowserThread::IO},
base::Bind(&InfoMap::AddExtension, info_map(),
base::RetainedRef(extension), base::Time::Now(),
true, // incognito_enabled
false), // notifications_disabled
callback);
}
// Implementation based on
// ExtensionSystemImpl::UnregisterExtensionWithRequestContexts.
void CefExtensionSystem::UnregisterExtensionWithRequestContexts(
const std::string& extension_id,
const UnloadedExtensionReason reason) {
base::PostTaskWithTraits(
FROM_HERE, {BrowserThread::IO},
base::Bind(&InfoMap::RemoveExtension, info_map(), extension_id, reason));
}
const OneShotEvent& CefExtensionSystem::ready() const {
return ready_;
}
ContentVerifier* CefExtensionSystem::content_verifier() {
return nullptr;
}
std::unique_ptr<ExtensionSet> CefExtensionSystem::GetDependentExtensions(
const Extension* extension) {
return std::make_unique<ExtensionSet>();
}
void CefExtensionSystem::InstallUpdate(
const std::string& extension_id,
const std::string& public_key,
const base::FilePath& temp_dir,
bool install_immediately,
InstallUpdateCallback install_update_callback) {
NOTREACHED();
base::DeleteFile(temp_dir, true /* recursive */);
}
bool CefExtensionSystem::FinishDelayedInstallationIfReady(
const std::string& extension_id,
bool install_immediately) {
NOTREACHED();
return false;
}
CefExtensionSystem::ComponentExtensionInfo::ComponentExtensionInfo(
const base::DictionaryValue* manifest,
const base::FilePath& directory,
bool internal)
: manifest(manifest), root_directory(directory), internal(internal) {
if (!root_directory.IsAbsolute()) {
// This path structure is required by
// url_request_util::MaybeCreateURLRequestResourceBundleJob.
CHECK(base::PathService::Get(chrome::DIR_RESOURCES, &root_directory));
root_directory = root_directory.Append(directory);
}
}
void CefExtensionSystem::InitPrefs() {
store_factory_ = new CefValueStoreFactory(browser_context_->GetPath());
Profile* profile = Profile::FromBrowserContext(browser_context_);
// Two state stores. The latter, which contains declarative rules, must be
// loaded immediately so that the rules are ready before we issue network
// requests.
state_store_.reset(new StateStore(
profile, store_factory_, ValueStoreFrontend::BackendType::STATE, true));
rules_store_.reset(new StateStore(
profile, store_factory_, ValueStoreFrontend::BackendType::RULES, false));
}
// Implementation based on ComponentLoader::CreateExtension.
scoped_refptr<const Extension> CefExtensionSystem::CreateExtension(
const ComponentExtensionInfo& info,
std::string* utf8_error) {
// TODO(abarth): We should REQUIRE_MODERN_MANIFEST_VERSION once we've updated
// our component extensions to the new manifest version.
int flags = 0;
if (info.internal) {
// Internal extensions must have kPublicKey in the manifest.
flags |= Extension::REQUIRE_KEY;
}
return Extension::Create(
info.root_directory,
// Tests should continue to use the Manifest::COMMAND_LINE value here
// Some Chrome APIs will cause undesired effects if this is incorrect
// e.g.: alarms API has 1 minute minimum applied to Packed Extensions
info.internal ? Manifest::COMPONENT : Manifest::COMMAND_LINE,
*info.manifest, flags, utf8_error);
}
// Implementation based on ComponentLoader::Load and
// ExtensionService::AddExtension.
const Extension* CefExtensionSystem::LoadExtension(
const ComponentExtensionInfo& info,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
std::string error;
scoped_refptr<const Extension> extension(CreateExtension(info, &error));
if (!extension.get()) {
LOG(ERROR) << error;
return nullptr;
}
if (registry_->GetInstalledExtension(extension->id())) {
LOG(ERROR) << "Extension with id " << extension->id()
<< "is already installed";
return nullptr;
}
CefRefPtr<CefExtensionImpl> cef_extension =
new CefExtensionImpl(extension.get(), loader_context.get(), handler);
// Insert first so that callbacks can retrieve the loaded extension.
extension_map_.insert(std::make_pair(extension->id(), cef_extension));
cef_extension->OnExtensionLoaded();
// This may trigger additional callbacks.
registry_->AddEnabled(extension.get());
NotifyExtensionLoaded(extension.get());
return extension.get();
}
// Implementation based on ExtensionService::UnloadExtension.
void CefExtensionSystem::UnloadExtension(const std::string& extension_id,
UnloadedExtensionReason reason) {
// Make sure the extension gets deleted after we return from this function.
int include_mask =
ExtensionRegistry::EVERYTHING & ~ExtensionRegistry::TERMINATED;
scoped_refptr<const Extension> extension(
registry_->GetExtensionById(extension_id, include_mask));
// This method can be called via PostTask, so the extension may have been
// unloaded by the time this runs.
if (!extension.get()) {
// In case the extension may have crashed/uninstalled. Allow the profile to
// clean up its RequestContexts.
UnregisterExtensionWithRequestContexts(extension_id, reason);
return;
}
if (registry_->disabled_extensions().Contains(extension->id())) {
registry_->RemoveDisabled(extension->id());
// Make sure the profile cleans up its RequestContexts when an already
// disabled extension is unloaded (since they are also tracking the disabled
// extensions).
UnregisterExtensionWithRequestContexts(extension_id, reason);
// Don't send the unloaded notification. It was sent when the extension
// was disabled.
} else {
// Remove the extension from the enabled list.
registry_->RemoveEnabled(extension->id());
NotifyExtensionUnloaded(extension.get(), reason);
}
content::NotificationService::current()->Notify(
extensions::NOTIFICATION_EXTENSION_REMOVED,
content::Source<content::BrowserContext>(browser_context_),
content::Details<const Extension>(extension.get()));
}
// Implementation based on ExtensionService::NotifyExtensionLoaded.
void CefExtensionSystem::NotifyExtensionLoaded(const Extension* extension) {
// The URLRequestContexts need to be first to know that the extension
// was loaded, otherwise a race can arise where a renderer that is created
// for the extension may try to load an extension URL with an extension id
// that the request context doesn't yet know about. The profile is responsible
// for ensuring its URLRequestContexts appropriately discover the loaded
// extension.
RegisterExtensionWithRequestContexts(
extension,
base::Bind(&CefExtensionSystem::OnExtensionRegisteredWithRequestContexts,
weak_ptr_factory_.GetWeakPtr(),
base::WrapRefCounted(extension)));
// Tell renderers about the loaded extension.
renderer_helper_->OnExtensionLoaded(*extension);
// Tell subsystems that use the ExtensionRegistryObserver::OnExtensionLoaded
// about the new extension.
//
// NOTE: It is important that this happen after notifying the renderers about
// the new extensions so that if we navigate to an extension URL in
// ExtensionRegistryObserver::OnExtensionLoaded the renderer is guaranteed to
// know about it.
registry_->TriggerOnLoaded(extension);
// Register plugins included with the extension.
// Implementation based on PluginManager::OnExtensionLoaded.
const MimeTypesHandler* handler = MimeTypesHandler::GetHandler(extension);
if (handler && !handler->handler_url().empty()) {
content::WebPluginInfo info;
info.type = content::WebPluginInfo::PLUGIN_TYPE_BROWSER_PLUGIN;
info.name = base::UTF8ToUTF16(extension->name());
info.path = base::FilePath::FromUTF8Unsafe(extension->url().spec());
for (std::set<std::string>::const_iterator mime_type =
handler->mime_type_set().begin();
mime_type != handler->mime_type_set().end(); ++mime_type) {
content::WebPluginMimeType mime_type_info;
mime_type_info.mime_type = *mime_type;
base::FilePath::StringType file_extension;
if (net::GetPreferredExtensionForMimeType(*mime_type, &file_extension)) {
mime_type_info.file_extensions.push_back(
base::FilePath(file_extension).AsUTF8Unsafe());
}
info.mime_types.push_back(mime_type_info);
}
content::PluginService* plugin_service =
content::PluginService::GetInstance();
plugin_service->RefreshPlugins();
plugin_service->RegisterInternalPlugin(info, true);
}
}
void CefExtensionSystem::OnExtensionRegisteredWithRequestContexts(
scoped_refptr<const extensions::Extension> extension) {
registry_->AddReady(extension);
if (registry_->enabled_extensions().Contains(extension->id()))
registry_->TriggerOnReady(extension.get());
}
// Implementation based on ExtensionService::NotifyExtensionUnloaded.
void CefExtensionSystem::NotifyExtensionUnloaded(
const Extension* extension,
UnloadedExtensionReason reason) {
// Unregister plugins included with the extension.
// Implementation based on PluginManager::OnExtensionUnloaded.
const MimeTypesHandler* handler = MimeTypesHandler::GetHandler(extension);
if (handler && !handler->handler_url().empty()) {
base::FilePath path =
base::FilePath::FromUTF8Unsafe(extension->url().spec());
content::PluginService* plugin_service =
content::PluginService::GetInstance();
plugin_service->UnregisterInternalPlugin(path);
plugin_service->RefreshPlugins();
}
registry_->TriggerOnUnloaded(extension, reason);
// Tell renderers about the unloaded extension.
renderer_helper_->OnExtensionUnloaded(*extension);
UnregisterExtensionWithRequestContexts(extension->id(), reason);
}
} // namespace extensions