PlzNavigate: support the WebRequest API

content/public/browser/content_browser_client.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 97 matching lines @@
 class BrowserPluginGuestDelegate;
 class BrowserPpapiHost;
 class BrowserURLHandler;
 class ClientCertificateDelegate;
 class DevToolsManagerDelegate;
 class ExternalVideoSurfaceContainer;
 class GpuProcessHost;
 class LocationProvider;
 class MediaObserver;
 class NavigationHandle;
+class NavigationUIData;
 class PlatformNotificationService;
 class PresentationServiceDelegate;
 class QuotaPermissionContext;
 class RenderFrameHost;
 class RenderProcessHost;
 class RenderViewHost;
 class ResourceContext;
 class SiteInstance;
 class SpeechRecognitionManagerDelegate;
 class TracingDelegate;
@@ skipping 606 matching lines @@
   virtual void RecordURLMetric(const std::string& metric, const GURL& url) {}
 
   // Allows the embedder to register one or more NavigationThrottles for the
   // navigation indicated by |navigation_handle|.  A NavigationThrottle is used
   // to control the flow of a navigation on the UI thread. The embedder is
   // guaranteed that the throttles will be executed in the order they were
   // provided.
   virtual ScopedVector<NavigationThrottle> CreateThrottlesForNavigation(
       NavigationHandle* navigation_handle);
 
+  // PlzNavigate
+  // Called at the start of the navigation to get opaque data the embedder
+  // wants to see passed to the corresponding URLRequest on the IO thread.
+  virtual std::unique_ptr<NavigationUIData> GetNavigationUIData(
+      NavigationHandle* navigation_handle);
+
   // Allows the embedder to provide its own AudioManager implementation.
   // If this function returns nullptr, a default platform implementation
   // will be used.
   virtual media::ScopedAudioManagerPtr CreateAudioManager(
       media::AudioLogFactory* audio_log_factory);
   // Creates and returns a factory used for creating CDM instances for playing
   // protected content.
   virtual std::unique_ptr<media::CdmFactory> CreateCdmFactory();
 
   // Populates |mappings| with all files that need to be mapped before launching
@@ skipping 29 matching lines @@
   // Returns whether the Win32k lockdown process mitigation should be applied to
   // a process hosting a plugin with the specified |mime_type|.
   virtual bool IsWin32kLockdownEnabledForMimeType(
       const std::string& mime_type) const;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_