Add mojo::StrongBindingSet and use it in GeolocationServiceContext.

content/browser/frame_host/render_frame_host_delegate.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_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/i18n/rtl.h"
 #include "content/common/content_export.h"
 #include "content/common/frame_message_enums.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/common/javascript_message_type.h"
 #include "content/public/common/media_stream_request.h"
 #include "net/http/http_response_headers.h"
 
 #if defined(OS_WIN)
 #include "ui/gfx/native_widget_types.h"
 #endif
 
 class GURL;
 
 namespace IPC {
 class Message;
 }
 
 namespace content {
-class GeolocationServiceContext;
 class PageState;
 class RenderFrameHost;
 class WakeLockServiceContext;
 class WebContents;
 struct AXEventNotificationDetails;
 struct ContextMenuParams;
 struct TransitionLayerData;
 
 // An interface implemented by an object interested in knowing about the state
 // of the RenderFrameHost.
@@ skipping 91 matching lines @@
   // Invoked when an accessibility event is received from the renderer.
   virtual void AccessibilityEventReceived(
       const std::vector<AXEventNotificationDetails>& details) {}
 
   // Find a guest RenderFrameHost by its parent |render_frame_host| and
   // |browser_plugin_instance_id|.
   virtual RenderFrameHost* GetGuestByInstanceID(
       RenderFrameHost* render_frame_host,
       int browser_plugin_instance_id);
 
-  // Gets the GeolocationServiceContext associated with this delegate.
-  virtual GeolocationServiceContext* GetGeolocationServiceContext();
-
   // Gets the WakeLockServiceContext associated with this delegate.
   virtual WakeLockServiceContext* GetWakeLockServiceContext();
 
   // Notification that the frame wants to go into fullscreen mode.
   // |origin| represents the origin of the frame that requests fullscreen.
   virtual void EnterFullscreenMode(const GURL& origin) {}
 
   // Notification that the frame wants to go out of fullscreen mode.
   virtual void ExitFullscreenMode() {}
 
@@ skipping 22 matching lines @@
   virtual gfx::NativeViewAccessible GetParentNativeViewAccessible();
 #endif
 
  protected:
   virtual ~RenderFrameHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_