PaintChunk::id

third_party/WebKit/Source/platform/testing/FakeDisplayItemClient.h

Index: third_party/WebKit/Source/platform/testing/FakeDisplayItemClient.h
diff --git a/third_party/WebKit/Source/platform/testing/FakeDisplayItemClient.h b/third_party/WebKit/Source/platform/testing/FakeDisplayItemClient.h
index ea301b43604d559254c7be367ff3fc1d4a3b450a..2540b7b705109ed1d50e32ce0c4f3364b5800f98 100644
--- a/third_party/WebKit/Source/platform/testing/FakeDisplayItemClient.h
+++ b/third_party/WebKit/Source/platform/testing/FakeDisplayItemClient.h
@@ -20,6 +20,12 @@ public:
     String debugName() const final { return m_name; }
     LayoutRect visualRect() const override { return m_visualRect; }
 
+    // This simulates a paint phase without needing a PaintController.

[chrishtr, 2016/07/19 17:27:52]

Simulates a paint, not a paint phase right? "Paint phase" is the
background/foreground/outline division of paint..

[Xianzhu, 2016/07/19 21:57:48]

Done.

+    void updateCacheGeneration()
+    {
+        setDisplayItemsCached(CacheGenerationOrInvalidationReason::next());
+    }
+
 private:
     String m_name;
     LayoutRect m_visualRect;