Revert of Remove cullRect() from PaintOpBuffer.

cc/trees/layer_tree_host_pixeltest_masks.cc

Index: cc/trees/layer_tree_host_pixeltest_masks.cc
diff --git a/cc/trees/layer_tree_host_pixeltest_masks.cc b/cc/trees/layer_tree_host_pixeltest_masks.cc
index 1d1d70b2cdd23c6e4aeae80cd8a45a0650cb718f..0a0b20fb74a8b35c147432da6b0ae65d6f1cf34f 100644
--- a/cc/trees/layer_tree_host_pixeltest_masks.cc
+++ b/cc/trees/layer_tree_host_pixeltest_masks.cc
@@ -42,7 +42,7 @@ class MaskContentLayerClient : public ContentLayerClient {
       PaintingControlSetting picture_control) override {
     PaintRecorder recorder;
     PaintCanvas* canvas =
-        recorder.beginRecording(gfx::RectToSkRect(PaintableRegion()));
+        recorder.beginRecording(gfx::RectToSkRect(gfx::Rect(bounds_)));
 
     PaintFlags flags;
     flags.setStyle(PaintFlags::kStroke_Style);
@@ -62,8 +62,7 @@ class MaskContentLayerClient : public ContentLayerClient {
 
     auto display_list = make_scoped_refptr(new DisplayItemList);
     display_list->CreateAndAppendDrawingItem<DrawingDisplayItem>(
-        PaintableRegion(), recorder.finishRecordingAsPicture(),
-        gfx::RectToSkRect(PaintableRegion()));
+        PaintableRegion(), recorder.finishRecordingAsPicture());
 
     display_list->Finalize();
     return display_list;
@@ -223,7 +222,7 @@ class CheckerContentLayerClient : public ContentLayerClient {
       PaintingControlSetting picture_control) override {
     PaintRecorder recorder;
     PaintCanvas* canvas =
-        recorder.beginRecording(gfx::RectToSkRect(PaintableRegion()));
+        recorder.beginRecording(gfx::RectToSkRect(gfx::Rect(bounds_)));
 
     PaintFlags flags;
     flags.setStyle(PaintFlags::kStroke_Style);
@@ -242,8 +241,7 @@ class CheckerContentLayerClient : public ContentLayerClient {
 
     auto display_list = make_scoped_refptr(new DisplayItemList);
     display_list->CreateAndAppendDrawingItem<DrawingDisplayItem>(
-        PaintableRegion(), recorder.finishRecordingAsPicture(),
-        gfx::RectToSkRect(PaintableRegion()));
+        PaintableRegion(), recorder.finishRecordingAsPicture());
 
     display_list->Finalize();
     return display_list;
@@ -267,7 +265,7 @@ class CircleContentLayerClient : public ContentLayerClient {
       PaintingControlSetting picture_control) override {
     PaintRecorder recorder;
     PaintCanvas* canvas =
-        recorder.beginRecording(gfx::RectToSkRect(PaintableRegion()));
+        recorder.beginRecording(gfx::RectToSkRect(gfx::Rect(bounds_)));
 
     PaintFlags flags;
     flags.setStyle(PaintFlags::kFill_Style);
@@ -278,8 +276,7 @@ class CircleContentLayerClient : public ContentLayerClient {
 
     auto display_list = make_scoped_refptr(new DisplayItemList);
     display_list->CreateAndAppendDrawingItem<DrawingDisplayItem>(
-        PaintableRegion(), recorder.finishRecordingAsPicture(),
-        gfx::RectToSkRect(PaintableRegion()));
+        PaintableRegion(), recorder.finishRecordingAsPicture());
 
     display_list->Finalize();
     return display_list;