Add chrome runtime support for more callbacks and ceftests (see issue #2969)

This change adds support for:
- Protocol and request handling.
- Loading and navigation events.
- Display and focus events.
- Mouse/keyboard events.
- Popup browsers.
- Callbacks in the renderer process.
- Misc. functionality required for ceftests.

This change also adds a new CefBrowserProcessHandler::GetCookieableSchemes
callback for configuring global state that will be applied to all
CefCookieManagers by default. This global callback is currently required by the
chrome runtime because the primary ProfileImpl is created via
ChromeBrowserMainParts::PreMainMessageLoopRun (CreatePrimaryProfile) before
OnContextCreated can be called.

ProfileImpl will use the "C:\Users\[user]\AppData\Local\CEF\User Data\Default"
directory by default (on Windows). Cookies may persist in this directory when
running ceftests and may need to be manually deleted if those tests fail.

Remaining work includes:
- Support for client-created request contexts.
- Embedding the browser in a Views hierarchy (cefclient support).
- TryCloseBrowser and DoClose support.
- Most of the CefSettings configuration.
- DevTools protocol and window control (ShowDevTools, ExecuteDevToolsMethod).
- CEF-specific WebUI pages (about, license, webui-hosts).
- Context menu customization (CefContextMenuHandler).
- Auto resize (SetAutoResizeEnabled).
- Zoom settings (SetZoomLevel).
- File dialog runner (RunFileDialog).
- File and JS dialog handlers (CefDialogHandler, CefJSDialogHandler).
- Extension loading (LoadExtension, etc).
- Plugin loading (OnBeforePluginLoad).
- Widevine loading (CefRegisterWidevineCdm).
- PDF and print preview does not display.
- Crash reporting is untested.
- Mac: Web content loads but does not display.

The following ceftests are now passing when run with the
"--enable-chrome-runtime" command-line flag:

CorsTest.*
DisplayTest.*:-DisplayTest.AutoResize
DOMTest.*
DraggableRegionsTest.*
ImageTest.*
MessageRouterTest.*
NavigationTest.*
ParserTest.*
RequestContextTest.*Global*
RequestTest.*
ResourceManagerTest.*
ResourceRequestHandlerTest.*
ResponseTest.*
SchemeHandlerTest.*
ServerTest.*
StreamResourceHandlerTest.*
StreamTest.*
StringTest.*
TaskTest.*
TestServerTest.*
ThreadTest.*
URLRequestTest.*Global*
V8Test.*:-V8Test.OnUncaughtExceptionDevTools
ValuesTest.*
WaitableEventTest.*
XmlReaderTest.*
ZipReaderTest.*

patch/patches/services_network_2622.patch

@@ -1,5 +1,5 @@
 diff --git chrome/browser/net/profile_network_context_service.cc chrome/browser/net/profile_network_context_service.cc
-index e5160aa3ff1a..87b037e517c2 100644
+index e5160aa3ff1a..f0ca556ed9e4 100644
 --- chrome/browser/net/profile_network_context_service.cc
 +++ chrome/browser/net/profile_network_context_service.cc
 @@ -19,6 +19,7 @@
@@ -10,12 +10,8 @@ index e5160aa3ff1a..87b037e517c2 100644
  #include "chrome/browser/browser_process.h"
  #include "chrome/browser/content_settings/cookie_settings_factory.h"
  #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
-@@ -668,9 +669,23 @@ void ProfileNetworkContextService::ConfigureNetworkContextParamsInternal(
-   network_context_params->cookie_manager_params =
-       CreateCookieManagerParams(profile_, *cookie_settings_);
+@@ -670,7 +671,19 @@ void ProfileNetworkContextService::ConfigureNetworkContextParamsInternal(
  
-+  network_context_params->cookieable_schemes = profile_->GetCookieableSchemes();
-+
    // Configure on-disk storage for non-OTR profiles. OTR profiles just use
    // default behavior (in memory storage, default sizes).
 -  if (!in_memory) {
@@ -35,7 +31,7 @@ index e5160aa3ff1a..87b037e517c2 100644
      PrefService* local_state = g_browser_process->local_state();
      // Configure the HTTP cache path and size.
      base::FilePath base_cache_path;
-@@ -683,7 +698,9 @@ void ProfileNetworkContextService::ConfigureNetworkContextParamsInternal(
+@@ -683,7 +696,9 @@ void ProfileNetworkContextService::ConfigureNetworkContextParamsInternal(
          base_cache_path.Append(chrome::kCacheDirname);
      network_context_params->http_cache_max_size =
          local_state->GetInteger(prefs::kDiskCacheSize);
@@ -45,22 +41,6 @@ index e5160aa3ff1a..87b037e517c2 100644
      // Currently this just contains HttpServerProperties, but that will likely
      // change.
      network_context_params->http_server_properties_path =
-diff --git chrome/browser/profiles/profile.h chrome/browser/profiles/profile.h
-index a9dc5ed20a9f..3ce894531a21 100644
---- chrome/browser/profiles/profile.h
-+++ chrome/browser/profiles/profile.h
-@@ -449,6 +449,11 @@ class Profile : public content::BrowserContext {
-   virtual bool ShouldRestoreOldSessionCookies() const;
-   virtual bool ShouldPersistSessionCookies() const;
- 
-+  // Returns schemes that should be cookieable, if other than the defaults.
-+  virtual base::Optional<std::vector<std::string>> GetCookieableSchemes() {
-+    return base::nullopt;
-+  }
-+
-   // Configures NetworkContextParams and CertVerifierCreationParams for the
-   // specified isolated app (or for the profile itself, if |relative_path| is
-   // empty).
 diff --git net/cookies/cookie_monster.cc net/cookies/cookie_monster.cc
 index 265deed0e52e..89d37ae6218a 100644
 --- net/cookies/cookie_monster.cc