Remove stale function declaration in BrowserPluginGuest.

content/browser/browser_plugin/browser_plugin_guest.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.
 
 // A BrowserPluginGuest is the browser side of a browser <--> embedder
 // renderer channel. A BrowserPlugin (a WebPlugin) is on the embedder
 // renderer side of browser <--> embedder renderer communication.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. Any
 // messages about the guest render process that the embedder might be interested
@@ skipping 252 matching lines @@
   void set_attached_for_test(bool attached) {
     attached_ = attached;
   }
 
  private:
   class EmbedderVisibilityObserver;
 
   void InitInternal(const BrowserPluginHostMsg_Attach_Params& params,
                     WebContentsImpl* owner_web_contents);
 
-  bool InAutoSizeBounds(const gfx::Size& size) const;
-
   void OnSatisfySequence(int instance_id, const cc::SurfaceSequence& sequence);
   void OnRequireSequence(int instance_id,
                          const cc::SurfaceId& id,
                          const cc::SurfaceSequence& sequence);
   // Message handlers for messages from embedder.
   void OnCompositorFrameSwappedACK(
       int instance_id,
       const FrameHostMsg_CompositorFrameSwappedACK_Params& params);
   void OnDetach(int instance_id);
   // Handles drag events from the embedder.
@@ skipping 173 matching lines @@
   // Weak pointer used to ask GeolocationPermissionContext about geolocation
   // permission.
   base::WeakPtrFactory<BrowserPluginGuest> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_