Revert 138415 - Makes the browser send pixels to the GPU process where it should.

ui/compositor/layer.h

Index: ui/compositor/layer.h
===================================================================
--- ui/compositor/layer.h	(revision 138418)
+++ ui/compositor/layer.h	(working copy)
@@ -198,12 +198,10 @@
   // Notifies the layer that the device scale factor has changed.
   void OnDeviceScaleFactorChanged(float device_scale_factor);
 
-  // Sets whether the layer should scale its content. If true, the canvas will
-  // be scaled in software rendering mode before it is passed to
-  // |LayerDelegate::OnPaint| and the texture will be scaled in accelerated
-  // mode. Set to false if the delegate handles scaling and the texture is
-  // the correct pixel size.
-  void set_scale_content(bool scale_content) { scale_content_ = scale_content; }
+  // Sets if the layer should scale the canvas before passing to
+  // |LayerDelegate::OnLayerPaint|. Set to false if the delegate
+  // handles scaling.
+  void set_scale_canvas(bool scale_canvas) { scale_canvas_ = scale_canvas; }
 
   // Sometimes the Layer is being updated by something other than SetCanvas
   // (e.g. the GPU process on UI_COMPOSITOR_IMAGE_TRANSPORT).
@@ -301,9 +299,9 @@
   bool web_layer_is_accelerated_;
   bool show_debug_borders_;
 
-  // If true, the layer scales the canvas and the texture with the device scale
-  // factor as appropriate. When true, the texture size is in DIP.
-  bool scale_content_;
+  // If true, the layer scales the canvas using device scale factor
+  // before passing to LayerDelegate::OnLayerPaint.
+  bool scale_canvas_;
 
   // A cached copy of |Compositor::device_scale_factor()|.
   float device_scale_factor_;