Implement webview.captureVisibleRegion()

content/browser/renderer_host/render_widget_host_view_android.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/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 #include <utility>
 
 #include "base/android/build_info.h"
@@ skipping 1948 matching lines @@
         SkColorType color_type,
         const base::TimeTicks& start_time,
         scoped_refptr<cc::Layer> readback_layer,
         const ReadbackRequestCallback& callback,
         scoped_ptr<cc::CopyOutputResult> result) {
   readback_layer->RemoveFromParent();
   PrepareTextureCopyOutputResult(dst_size_in_pixel, color_type, start_time,
                                  callback, std::move(result));
 }
 
+// TODO(wjmaclean): There is significant overlap between
+// PrepareTextureCopyOutputResult and CopyFromCompositingSurfaceFinished in
+// this file, and the versions in surface_utils.cc. They should
+// be merged. See https://crbug.com/582955
+
 // static
 void RenderWidgetHostViewAndroid::PrepareTextureCopyOutputResult(
     const gfx::Size& dst_size_in_pixel,
     SkColorType color_type,
     const base::TimeTicks& start_time,
     const ReadbackRequestCallback& callback,
     scoped_ptr<cc::CopyOutputResult> result) {
   base::ScopedClosureRunner scoped_callback_runner(
       base::Bind(callback, SkBitmap(), READBACK_FAILED));
   TRACE_EVENT0("cc",
@@ skipping 84 matching lines @@
   results->orientationAngle = display.RotationAsDegree();
   results->orientationType =
       RenderWidgetHostViewBase::GetOrientationTypeForMobile(display);
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 }  // namespace content