Stop painting when receiving delegated frame

ui/compositor/layer_unittest.cc

Index: ui/compositor/layer_unittest.cc
diff --git a/ui/compositor/layer_unittest.cc b/ui/compositor/layer_unittest.cc
index 9cb80c4d9975ec224fa7bd9ad1a91b3e1d120871..7b1f8f49ad8d4071af6fdac2eb57c9c6bfa00082 100644
--- a/ui/compositor/layer_unittest.cc
+++ b/ui/compositor/layer_unittest.cc
@@ -66,6 +66,9 @@ class ColoredLayer : public Layer, public LayerDelegate {
     canvas->DrawColor(color_);
   }
 
+  virtual void OnDelegatedFrameDamage(
+      const gfx::Rect& damage_rect_in_dip) OVERRIDE {}
+
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {
   }
 
@@ -240,6 +243,9 @@ class TestLayerDelegate : public LayerDelegate {
     scale_y_ = matrix.getScaleY();
   }
 
+  virtual void OnDelegatedFrameDamage(
+      const gfx::Rect& damage_rect_in_dip) OVERRIDE {}
+
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {
     device_scale_factor_ = device_scale_factor;
   }
@@ -283,6 +289,8 @@ class DrawTreeLayerDelegate : public LayerDelegate {
   virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE {
     painted_ = true;
   }
+  virtual void OnDelegatedFrameDamage(
+      const gfx::Rect& damage_rect_in_dip) OVERRIDE {}
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {
   }
   virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE {
@@ -302,10 +310,10 @@ class NullLayerDelegate : public LayerDelegate {
 
  private:
   // Overridden from LayerDelegate:
-  virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE {
-  }
-  virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {
-  }
+  virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE {}
+  virtual void OnDelegatedFrameDamage(
+      const gfx::Rect& damage_rect_in_dip) OVERRIDE {}
+  virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {}
   virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE {
     return base::Closure();
   }
@@ -1121,6 +1129,9 @@ class SchedulePaintLayerDelegate : public LayerDelegate {
       last_clip_rect_ = gfx::SkRectToRectF(sk_clip_rect);
   }
 
+  virtual void OnDelegatedFrameDamage(

[danakj, 2014/08/18 20:01:49]

A unit test that we call this would be nice?

[enne (OOO), 2014/08/18 23:32:21]

Done.

+      const gfx::Rect& damage_rect_in_dip) OVERRIDE {}
+
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {
   }