Turn off computation of the interest rect in cc in synchronized paint mode.

cc/layers/picture_image_layer.cc

Index: cc/layers/picture_image_layer.cc
diff --git a/cc/layers/picture_image_layer.cc b/cc/layers/picture_image_layer.cc
index f2caeaf199d58086eb5756533efefaadaad13566..91498612933ab81e08dbafde8b16b840c86d4527 100644
--- a/cc/layers/picture_image_layer.cc
+++ b/cc/layers/picture_image_layer.cc
@@ -50,8 +50,8 @@ void PictureImageLayer::SetImage(skia::RefPtr<const SkImage> image) {
 }
 
 scoped_refptr<DisplayItemList> PictureImageLayer::PaintContentsToDisplayList(
-    const gfx::Rect& clip,
-    ContentLayerClient::PaintingControlSetting painting_control) {
+    ContentLayerClient::PaintingControlSetting painting_control,
+    gfx::Rect* recording_viewport) {
   DCHECK(image_);
   DCHECK_GT(image_->width(), 0);
   DCHECK_GT(image_->height(), 0);
@@ -61,10 +61,11 @@ scoped_refptr<DisplayItemList> PictureImageLayer::PaintContentsToDisplayList(
   DisplayItemListSettings settings;
   settings.use_cached_picture = true;
   scoped_refptr<DisplayItemList> display_list =
-      DisplayItemList::Create(clip, settings);
+      DisplayItemList::Create(*recording_viewport, settings);
 
   SkPictureRecorder recorder;
-  SkCanvas* canvas = recorder.beginRecording(gfx::RectToSkRect(clip));
+  SkCanvas* canvas =
+      recorder.beginRecording(gfx::RectToSkRect(*recording_viewport));
 
   SkScalar content_to_layer_scale_x =
       SkFloatToScalar(static_cast<float>(bounds().width()) / image_->width());