cc: Cull DrawingDisplayItems outside of the raster playback rect

cc/playback/compositing_display_item.cc

Index: cc/playback/compositing_display_item.cc
diff --git a/cc/playback/compositing_display_item.cc b/cc/playback/compositing_display_item.cc
index cb6117ee4ba963e203d776ebcc972f25f59a56aa..2cd4f4073adc384b54bbc9583276854d585f6b85 100644
--- a/cc/playback/compositing_display_item.cc
+++ b/cc/playback/compositing_display_item.cc
@@ -37,8 +37,10 @@ void CompositingDisplayItem::SetNew(uint8_t alpha,
                       memory_usage);
 }
 
-void CompositingDisplayItem::Raster(SkCanvas* canvas,
-                                    SkPicture::AbortCallback* callback) const {
+void CompositingDisplayItem::Raster(
+    SkCanvas* canvas,
+    const gfx::Rect& canvas_target_playback_rect,
+    SkPicture::AbortCallback* callback) const {
   SkPaint paint;
   paint.setXfermodeMode(xfermode_);
   paint.setAlpha(alpha_);
@@ -67,6 +69,7 @@ EndCompositingDisplayItem::~EndCompositingDisplayItem() {
 
 void EndCompositingDisplayItem::Raster(
     SkCanvas* canvas,
+    const gfx::Rect& canvas_target_playback_rect,
     SkPicture::AbortCallback* callback) const {
   canvas->restore();
 }