Implement transform/clip support for Android WebView.

cc/output/software_output_device.cc

 // Copyright 2013 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 "cc/output/software_output_device.h"
 
 #include "base/logging.h"
 #include "cc/output/software_frame_data.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkDevice.h"
+#include "ui/gfx/skia_util.h"
 
 namespace cc {
 
 SoftwareOutputDevice::SoftwareOutputDevice() {}
 
 SoftwareOutputDevice::~SoftwareOutputDevice() {}
 
 void SoftwareOutputDevice::Resize(gfx::Size viewport_size) {
   if (viewport_size_ == viewport_size)
     return;
@@ skipping 15 matching lines @@
   if (frame_data) {
     frame_data->size = viewport_size_;
     frame_data->damage_rect = damage_rect_;
     frame_data->dib_id = TransportDIB::Id();
   }
 }
 
 void SoftwareOutputDevice::CopyToBitmap(
     gfx::Rect rect, SkBitmap* output) {
   DCHECK(device_);
-  SkIRect invert_rect = SkIRect::MakeXYWH(
-      rect.x(), viewport_size_.height() - rect.bottom(),
-      rect.width(), rect.height());
   const SkBitmap& bitmap = device_->accessBitmap(false);
-  bitmap.extractSubset(output, invert_rect);
+  bitmap.extractSubset(output, gfx::RectToSkIRect(rect));
 }
 
 void SoftwareOutputDevice::Scroll(
     gfx::Vector2d delta, gfx::Rect clip_rect) {
   NOTIMPLEMENTED();
 }
 
 void SoftwareOutputDevice::ReclaimDIB(const TransportDIB::Id& id) {
   NOTIMPLEMENTED();
 }
 
 }  // namespace cc