chrome: cefclient: Add default handler for request tests (see issue #3444)

Support loading of request tests (e.g. http://tests/other_tests) inside default
browsers created via "New window" and "New incognito window" commands.

cef_paths2.gypi

@@ -237,6 +237,8 @@
       'tests/cefclient/browser/client_prefs.cc',
       'tests/cefclient/browser/client_prefs.h',
       'tests/cefclient/browser/client_types.h',
+      'tests/cefclient/browser/default_client_handler.cc',
+      'tests/cefclient/browser/default_client_handler.h',
       'tests/cefclient/browser/dialog_test.cc',
       'tests/cefclient/browser/dialog_test.h',
       'tests/cefclient/browser/image_cache.cc',

tests/cefclient/browser/client_browser.cc

@@ -5,10 +5,12 @@
 #include "tests/cefclient/browser/client_browser.h"
 #include "tests/cefclient/browser/main_context.h"
 
+#include "include/base/cef_logging.h"
 #include "include/cef_command_line.h"
 #include "include/cef_crash_util.h"
 #include "include/cef_file_util.h"
 #include "tests/cefclient/browser/client_prefs.h"
+#include "tests/cefclient/browser/default_client_handler.h"
 #include "tests/shared/common/client_switches.h"
 
 namespace client {
@@ -60,6 +62,14 @@ class ClientBrowserDelegate : public ClientAppBrowser::Delegate {
     }
   }
 
+  CefRefPtr<CefClient> GetDefaultClient(
+      CefRefPtr<ClientAppBrowser> app) override {
+    // Default client handler for unmanaged browser windows. Used with the
+    // Chrome runtime only.
+    LOG(INFO) << "Creating a chrome browser with the default client";
+    return new DefaultClientHandler();
+  }
+
  private:
   DISALLOW_COPY_AND_ASSIGN(ClientBrowserDelegate);
   IMPLEMENT_REFCOUNTING(ClientBrowserDelegate);

tests/cefclient/browser/default_client_handler.cc

@@ -0,0 +1,60 @@
+// Copyright (c) 2023 The Chromium Embedded Framework 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 "tests/cefclient/browser/default_client_handler.h"
+
+#include "tests/cefclient/browser/test_runner.h"
+
+namespace client {
+
+DefaultClientHandler::DefaultClientHandler() {
+  resource_manager_ = new CefResourceManager();
+  test_runner::SetupResourceManager(resource_manager_, nullptr);
+}
+
+CefRefPtr<CefResourceRequestHandler>
+DefaultClientHandler::GetResourceRequestHandler(
+    CefRefPtr<CefBrowser> browser,
+    CefRefPtr<CefFrame> frame,
+    CefRefPtr<CefRequest> request,
+    bool is_navigation,
+    bool is_download,
+    const CefString& request_initiator,
+    bool& disable_default_handling) {
+  CEF_REQUIRE_IO_THREAD();
+  return this;
+}
+
+cef_return_value_t DefaultClientHandler::OnBeforeResourceLoad(
+    CefRefPtr<CefBrowser> browser,
+    CefRefPtr<CefFrame> frame,
+    CefRefPtr<CefRequest> request,
+    CefRefPtr<CefCallback> callback) {
+  CEF_REQUIRE_IO_THREAD();
+
+  return resource_manager_->OnBeforeResourceLoad(browser, frame, request,
+                                                 callback);
+}
+
+CefRefPtr<CefResourceHandler> DefaultClientHandler::GetResourceHandler(
+    CefRefPtr<CefBrowser> browser,
+    CefRefPtr<CefFrame> frame,
+    CefRefPtr<CefRequest> request) {
+  CEF_REQUIRE_IO_THREAD();
+
+  return resource_manager_->GetResourceHandler(browser, frame, request);
+}
+
+CefRefPtr<CefResponseFilter> DefaultClientHandler::GetResourceResponseFilter(
+    CefRefPtr<CefBrowser> browser,
+    CefRefPtr<CefFrame> frame,
+    CefRefPtr<CefRequest> request,
+    CefRefPtr<CefResponse> response) {
+  CEF_REQUIRE_IO_THREAD();
+
+  return test_runner::GetResourceResponseFilter(browser, frame, request,
+                                                response);
+}
+
+}  // namespace client

tests/cefclient/browser/default_client_handler.h

@@ -0,0 +1,61 @@
+// Copyright (c) 2023 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#ifndef CEF_TESTS_CEFCLIENT_BROWSER_DEFAULT_CLIENT_HANDLER_H_
+#define CEF_TESTS_CEFCLIENT_BROWSER_DEFAULT_CLIENT_HANDLER_H_
+#pragma once
+
+#include "include/cef_client.h"
+#include "include/wrapper/cef_resource_manager.h"
+
+namespace client {
+
+// Default client handler for unmanaged browser windows. Used with the Chrome
+// runtime only.
+class DefaultClientHandler : public CefClient,
+                             public CefRequestHandler,
+                             public CefResourceRequestHandler {
+ public:
+  DefaultClientHandler();
+
+  // CefClient methods
+  CefRefPtr<CefRequestHandler> GetRequestHandler() override { return this; }
+
+  // CefRequestHandler methods
+  CefRefPtr<CefResourceRequestHandler> GetResourceRequestHandler(
+      CefRefPtr<CefBrowser> browser,
+      CefRefPtr<CefFrame> frame,
+      CefRefPtr<CefRequest> request,
+      bool is_navigation,
+      bool is_download,
+      const CefString& request_initiator,
+      bool& disable_default_handling) override;
+
+  // CefResourceRequestHandler methods
+  cef_return_value_t OnBeforeResourceLoad(
+      CefRefPtr<CefBrowser> browser,
+      CefRefPtr<CefFrame> frame,
+      CefRefPtr<CefRequest> request,
+      CefRefPtr<CefCallback> callback) override;
+  CefRefPtr<CefResourceHandler> GetResourceHandler(
+      CefRefPtr<CefBrowser> browser,
+      CefRefPtr<CefFrame> frame,
+      CefRefPtr<CefRequest> request) override;
+  CefRefPtr<CefResponseFilter> GetResourceResponseFilter(
+      CefRefPtr<CefBrowser> browser,
+      CefRefPtr<CefFrame> frame,
+      CefRefPtr<CefRequest> request,
+      CefRefPtr<CefResponse> response) override;
+
+ private:
+  // Manages the registration and delivery of resources.
+  CefRefPtr<CefResourceManager> resource_manager_;
+
+  IMPLEMENT_REFCOUNTING(DefaultClientHandler);
+  DISALLOW_COPY_AND_ASSIGN(DefaultClientHandler);
+};
+
+}  // namespace client
+
+#endif  // CEF_TESTS_CEFCLIENT_BROWSER_DEFAULT_CLIENT_HANDLER_H_

tests/cefclient/browser/test_runner.cc

@@ -772,10 +772,12 @@ void SetupResourceManager(CefRefPtr<CefResourceManager> resource_manager,
   string_pages.insert(kTestGetSourcePage);
   string_pages.insert(kTestGetTextPage);
 
-  // Add provider for string resources.
-  resource_manager->AddProvider(
-      new StringResourceProvider(string_pages, string_resource_map), 0,
-      std::string());
+  if (string_resource_map) {
+    // Add provider for string resources.
+    resource_manager->AddProvider(
+        new StringResourceProvider(string_pages, string_resource_map), 0,
+        std::string());
+  }
 
 // Add provider for bundled resource files.
 #if defined(OS_WIN)

tests/shared/browser/client_app_browser.cc

@@ -92,24 +92,21 @@ void ClientAppBrowser::OnBeforeCommandLineProcessing(
 void ClientAppBrowser::OnRegisterCustomPreferences(
     cef_preferences_type_t type,
     CefRawPtr<CefPreferenceRegistrar> registrar) {
-  DelegateSet::iterator it = delegates_.begin();
-  for (; it != delegates_.end(); ++it) {
-    (*it)->OnRegisterCustomPreferences(this, type, registrar);
+  for (auto& delegate : delegates_) {
+    delegate->OnRegisterCustomPreferences(this, type, registrar);
   }
 }
 
 void ClientAppBrowser::OnContextInitialized() {
-  DelegateSet::iterator it = delegates_.begin();
-  for (; it != delegates_.end(); ++it) {
-    (*it)->OnContextInitialized(this);
+  for (auto& delegate : delegates_) {
+    delegate->OnContextInitialized(this);
   }
 }
 
 void ClientAppBrowser::OnBeforeChildProcessLaunch(
     CefRefPtr<CefCommandLine> command_line) {
-  DelegateSet::iterator it = delegates_.begin();
-  for (; it != delegates_.end(); ++it) {
-    (*it)->OnBeforeChildProcessLaunch(this, command_line);
+  for (auto& delegate : delegates_) {
+    delegate->OnBeforeChildProcessLaunch(this, command_line);
   }
 }
 
@@ -122,4 +119,13 @@ void ClientAppBrowser::OnScheduleMessagePumpWork(int64 delay) {
   }
 }
 
+CefRefPtr<CefClient> ClientAppBrowser::GetDefaultClient() {
+  for (auto& delegate : delegates_) {
+    if (auto client = delegate->GetDefaultClient(this)) {
+      return client;
+    }
+  }
+  return nullptr;
+}
+
 }  // namespace client

tests/shared/browser/client_app_browser.h

@@ -34,6 +34,11 @@ class ClientAppBrowser : public ClientApp, public CefBrowserProcessHandler {
     virtual void OnBeforeChildProcessLaunch(
         CefRefPtr<ClientAppBrowser> app,
         CefRefPtr<CefCommandLine> command_line) {}
+
+    virtual CefRefPtr<CefClient> GetDefaultClient(
+        CefRefPtr<ClientAppBrowser> app) {
+      return nullptr;
+    }
   };
 
   typedef std::set<CefRefPtr<Delegate>> DelegateSet;
@@ -71,6 +76,7 @@ class ClientAppBrowser : public ClientApp, public CefBrowserProcessHandler {
   void OnBeforeChildProcessLaunch(
       CefRefPtr<CefCommandLine> command_line) override;
   void OnScheduleMessagePumpWork(int64 delay) override;
+  CefRefPtr<CefClient> GetDefaultClient() override;
 
   // Set of supported Delegates.
   DelegateSet delegates_;