Add --disable-low-res-tiling. Disable low res tiling to save power.

cc/layers/picture_layer_impl.h

Index: cc/layers/picture_layer_impl.h
diff --git a/cc/layers/picture_layer_impl.h b/cc/layers/picture_layer_impl.h
index 7f103b1f6b2dc39449997090b8efb9aaa62ae4c9..551d9ae8c4d3348c9859f325959bc2f235095619 100644
--- a/cc/layers/picture_layer_impl.h
+++ b/cc/layers/picture_layer_impl.h
@@ -90,7 +90,7 @@ class CC_EXPORT PictureLayerImpl
   void SyncFromActiveLayer(const PictureLayerImpl* other);
   void ManageTilings(bool animating_transform_to_screen);
   bool ShouldHaveLowResTiling() const {
-    return !should_use_gpu_rasterization();
+    return !should_use_gpu_rasterization() && should_use_low_res_tiling_;

[enne (OOO), 2014/03/12 17:52:08]

Can you make this just should_use_low_res_tiling and have the could that enables
should_use_gpu_rasterization set that to true?

   }
   virtual bool ShouldAdjustRasterScale(
       bool animating_transform_to_screen) const;
@@ -150,6 +150,7 @@ class CC_EXPORT PictureLayerImpl
   // after a CalculateContentsScale/ManageTilings.
   bool should_update_tile_priorities_;
   bool should_use_gpu_rasterization_;
+  bool should_use_low_res_tiling_;
 
   friend class PictureLayer;
   DISALLOW_COPY_AND_ASSIGN(PictureLayerImpl);