Allow override of user agent depending on url.

content/public/renderer/render_frame_observer.h

 // Copyright 2013 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_RENDERER_RENDER_FRAME_OBSERVER_H_
 #define CONTENT_PUBLIC_RENDERER_RENDER_FRAME_OBSERVER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
+#include "url/gurl.h"

[jochen (gone - plz use gerrit), 2014/10/02 09:24:03]

should be enough to forward declare GURL, no?

 #include "v8/include/v8.h"
 
 namespace blink {
 class WebFrame;
 struct WebURLError;
 }
 
 namespace content {
 
 class RendererPpapiHost;
@@ skipping 43 matching lines @@
   // "\n    at function_name (source:line_number:column_number)").
   virtual void DetailedConsoleMessageAdded(const base::string16& message,
                                            const base::string16& source,
                                            const base::string16& stack_trace,
                                            int32 line_number,
                                            int32 severity_level) {}
 
   // Called when a compositor frame has committed.
   virtual void DidCommitCompositorFrame() {}
 
+  // Returns a user agent override specific for |url|, or empty string if
+  // default user agent should be used.
+  virtual std::string GetUserAgentOverrideForURL(const GURL& url);
+
   // IPC::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // IPC::Sender implementation.
   virtual bool Send(IPC::Message* message) OVERRIDE;
 
   RenderFrame* render_frame() const;
   int routing_id() const { return routing_id_; }
 
  protected:
@@ skipping 10 matching lines @@
   RenderFrame* render_frame_;
   // The routing ID of the associated RenderFrame.
   int routing_id_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameObserver);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_RENDER_FRAME_OBSERVER_H_