Improve Aura overdraw by changing hole calculation

views/view_unittest.cc

Index: views/view_unittest.cc
diff --git a/views/view_unittest.cc b/views/view_unittest.cc
index 679754dbb89780d647c736611d763f16da3db02b..c4a5256e8147e4c3cad04d1aa3e13e3a8740a574 100644
--- a/views/view_unittest.cc
+++ b/views/view_unittest.cc
@@ -2833,14 +2833,18 @@ TEST_F(ViewLayerTest, ToggleOpacityWithLayer) {
   child_view->SetBounds(50, 50, 100, 100);
   parent_view->AddChildView(child_view);
 
+  widget()->GetCompositor()->Draw(false);
+
   ASSERT_TRUE(child_view->layer() == NULL);
   child_view->SetPaintToLayer(true);
   child_view->SetFillsBoundsOpaquely(true);
+  widget()->GetCompositor()->Draw(false);
   ASSERT_TRUE(child_view->layer());
   EXPECT_EQ(
       gfx::Rect(50, 50, 100, 100), parent_view->layer()->hole_rect());
 
   child_view->SetFillsBoundsOpaquely(false);
+  widget()->GetCompositor()->Draw(false);
   EXPECT_TRUE(parent_view->layer()->hole_rect().IsEmpty());
 }
 
@@ -2867,12 +2871,15 @@ TEST_F(ViewLayerTest, MultipleOpaqueLayers) {
   child_view2->SetBounds(150, 150, 200, 200);
   parent_view->AddChildView(child_view2);
 
+  widget()->GetCompositor()->Draw(false);
+
   // Only child_view1 is opaque
   EXPECT_EQ(
       gfx::Rect(50, 50, 100, 100), parent_view->layer()->hole_rect());
 
   // Both child views are opaque
   child_view2->SetFillsBoundsOpaquely(true);
+  widget()->GetCompositor()->Draw(false);
   EXPECT_TRUE(
       gfx::Rect(50, 50, 100, 100) == parent_view->layer()->hole_rect() ||
       gfx::Rect(150, 150, 200, 200) == parent_view->layer()->hole_rect());
@@ -2901,13 +2908,16 @@ TEST_F(ViewLayerTest, ToggleVisibilityWithOpaqueLayer) {
   child_view->SetPaintToLayer(true);
   child_view->SetFillsBoundsOpaquely(true);
   parent_view->AddChildView(child_view);
+  widget()->GetCompositor()->Draw(false);
   EXPECT_EQ(
        gfx::Rect(50, 50, 100, 100), parent_view->layer()->hole_rect());
 
   child_view->SetVisible(false);
+  widget()->GetCompositor()->Draw(false);
   EXPECT_TRUE(parent_view->layer()->hole_rect().IsEmpty());
 
   child_view->SetVisible(true);
+  widget()->GetCompositor()->Draw(false);
   EXPECT_EQ(
       gfx::Rect(50, 50, 100, 100), parent_view->layer()->hole_rect());
 }