Maintain minimal error response.

content/browser/android/content_view_core_impl.h

 // Copyright 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_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_
 #define CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_
 
 #include <vector>
 
 #include "base/android/jni_android.h"
@@ skipping 38 matching lines @@
 
   // ContentViewCore implementation.
   base::android::ScopedJavaLocalRef<jobject> GetJavaObject() override;
   WebContents* GetWebContents() const override;
   ui::ViewAndroid* GetViewAndroid() const override;
   ui::WindowAndroid* GetWindowAndroid() const override;
   const scoped_refptr<cc::Layer>& GetLayer() const override;
   void ShowPastePopup(int x, int y) override;
   void GetScaledContentBitmap(
       float scale,
-      SkColorType color_type,
+      SkColorType preferred_color_type,
       gfx::Rect src_subrect,
       ReadbackRequestCallback& result_callback) override;
   float GetDpiScale() const override;
   void PauseOrResumeGeolocation(bool should_pause) override;
   void RequestTextSurroundingSelection(
       int max_length,
       const base::Callback<void(const base::string16& content,
                                 int start_offset,
                                 int end_offset)>& callback) override;
 
@@ skipping 297 matching lines @@
   scoped_refptr<GinJavaBridgeDispatcherHost> java_bridge_dispatcher_host_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentViewCoreImpl);
 };
 
 bool RegisterContentViewCore(JNIEnv* env);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_