Maintain minimal error response.

content/test/test_render_view_host.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_TEST_TEST_RENDER_VIEW_HOST_H_
 #define CONTENT_TEST_TEST_RENDER_VIEW_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 93 matching lines @@
   void ImeCancelComposition() override {}
   void ImeCompositionRangeChanged(
       const gfx::Range& range,
       const std::vector<gfx::Rect>& character_bounds) override {}
   void RenderProcessGone(base::TerminationStatus status,
                          int error_code) override;
   void Destroy() override;
   void SetTooltipText(const base::string16& tooltip_text) override {}
   void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) override {}
-  void CopyFromCompositingSurface(const gfx::Rect& src_subrect,
-                                  const gfx::Size& dst_size,
-                                  ReadbackRequestCallback& callback,
-                                  const SkColorType color_type) override;
+  void CopyFromCompositingSurface(
+      const gfx::Rect& src_subrect,
+      const gfx::Size& dst_size,
+      ReadbackRequestCallback& callback,
+      const SkColorType preferred_color_type) override;
   void CopyFromCompositingSurfaceToVideoFrame(
       const gfx::Rect& src_subrect,
       const scoped_refptr<media::VideoFrame>& target,
       const base::Callback<void(bool)>& callback) override;
   bool CanCopyToVideoFrame() const override;
   bool HasAcceleratedSurface(const gfx::Size& desired_size) override;
 #if defined(OS_MACOSX)
   bool PostProcessEventForPluginIme(
       const NativeWebKeyboardEvent& event) override;
 #endif
@@ skipping 185 matching lines @@
  private:
   typedef scoped_ptr<ui::test::ScopedSetSupportedScaleFactors>
       ScopedSetSupportedScaleFactors;
   ScopedSetSupportedScaleFactors scoped_set_supported_scale_factors_;
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImplTestHarness);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_TEST_RENDER_VIEW_HOST_H_