Preparation for enabling slimming paint synchronized painting

third_party/WebKit/Source/core/paint/LayerClipRecorderTest.cpp

Index: third_party/WebKit/Source/core/paint/LayerClipRecorderTest.cpp
diff --git a/third_party/WebKit/Source/core/paint/LayerClipRecorderTest.cpp b/third_party/WebKit/Source/core/paint/LayerClipRecorderTest.cpp
index 5f07cd095598ce5aaf26d58334dbd24bd821ce04..6f8c1aaf055077f066729ef106fcd08304496686 100644
--- a/third_party/WebKit/Source/core/paint/LayerClipRecorderTest.cpp
+++ b/third_party/WebKit/Source/core/paint/LayerClipRecorderTest.cpp
@@ -60,6 +60,7 @@ void drawRectInClip(GraphicsContext& context, LayoutView& layoutView, PaintPhase
 
 TEST_F(LayerClipRecorderTest, Single)
 {
+    rootPaintController().invalidateAll();

[Xianzhu, 2015/10/28 18:10:23]

Synchronized painting generates display item for the first layout of about:blank
before the first line of the test is executed. This is to avoid the cache from
affecting the test below.

     GraphicsContext context(rootPaintController());
     LayoutRect bound = layoutView().viewRect();
     EXPECT_EQ((size_t)0, rootPaintController().displayItemList().size());
@@ -74,6 +75,7 @@ TEST_F(LayerClipRecorderTest, Single)
 
 TEST_F(LayerClipRecorderTest, Empty)
 {
+    rootPaintController().invalidateAll();
     GraphicsContext context(rootPaintController());
     EXPECT_EQ((size_t)0, rootPaintController().displayItemList().size());