Add PlatformPictureSkia and RecordingPlatformDeviceSkia.

cc/SkPictureCanvasLayerTextureUpdater.cpp

Index: cc/SkPictureCanvasLayerTextureUpdater.cpp
diff --git a/cc/SkPictureCanvasLayerTextureUpdater.cpp b/cc/SkPictureCanvasLayerTextureUpdater.cpp
index 62026d7227c3fd6f0e796a29bf1af8af3c23f3ce..757b97a02326ff5478f10be2f3bfaf38d7772275 100644
--- a/cc/SkPictureCanvasLayerTextureUpdater.cpp
+++ b/cc/SkPictureCanvasLayerTextureUpdater.cpp
@@ -12,11 +12,13 @@
 #include "LayerPainterChromium.h"
 #include "SkCanvas.h"
 #include "TraceEvent.h"
+#include "skia/ext/platform_picture_skia.h"
 
 namespace cc {
 
 SkPictureCanvasLayerTextureUpdater::SkPictureCanvasLayerTextureUpdater(PassOwnPtr<LayerPainterChromium> painter)
     : CanvasLayerTextureUpdater(painter)
+    , m_picture(adoptPtr(new skia::PlatformPictureSkia))
     , m_layerIsOpaque(false)
 {
 }
@@ -27,15 +29,15 @@ SkPictureCanvasLayerTextureUpdater::~SkPictureCanvasLayerTextureUpdater()
 
 void SkPictureCanvasLayerTextureUpdater::prepareToUpdate(const IntRect& contentRect, const IntSize&, float contentsWidthScale, float contentsHeightScale, IntRect& resultingOpaqueRect, CCRenderingStats& stats)
 {
-    SkCanvas* canvas = m_picture.beginRecording(contentRect.width(), contentRect.height());
+    SkCanvas* canvas = m_picture->beginRecording(contentRect.width(), contentRect.height());
     paintContents(canvas, contentRect, contentsWidthScale, contentsHeightScale, resultingOpaqueRect, stats);
-    m_picture.endRecording();
+    m_picture->endRecording();
 }
 
 void SkPictureCanvasLayerTextureUpdater::drawPicture(SkCanvas* canvas)
 {
     TRACE_EVENT0("cc", "SkPictureCanvasLayerTextureUpdater::drawPicture");
-    canvas->drawPicture(m_picture);
+    m_picture->drawPicture(canvas);
 }
 
 void SkPictureCanvasLayerTextureUpdater::setOpaque(bool opaque)