Remove unused WebTestProxy paint/canvas code

content/test/layouttest_support.cc

 // 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.
 
 #include "content/public/test/layouttest_support.h"
 
 #include "base/callback.h"
 #include "base/lazy_instance.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/gpu/image_transport_surface.h"
@@ skipping 120 matching lines @@
 
 void SetFocusAndActivate(RenderView* render_view, bool enable) {
   static_cast<RenderViewImpl*>(render_view)->
       SetFocusAndActivateForTesting(enable);
 }
 
 void ForceResizeRenderView(RenderView* render_view,
                            const WebSize& new_size) {
   RenderViewImpl* render_view_impl = static_cast<RenderViewImpl*>(render_view);
   render_view_impl->ForceResizeForTesting(new_size);
-  GetWebTestProxyBase(render_view_impl)->DidForceResize();
 }
 
 void SetDeviceScaleFactor(RenderView* render_view, float factor) {
   static_cast<RenderViewImpl*>(render_view)->
       SetDeviceScaleFactorForTesting(factor);
 }
 
 void SetDeviceColorProfile(RenderView* render_view, const std::string& name) {
   std::vector<char> color_profile;
 
@@ skipping 143 matching lines @@
     result.append(
         DumpHistoryItem(entry->root_history_node(),
                         8,
                         index == current_index));
   }
   result.append("===============================================\n");
   return result;
 }
 
 }  // namespace content