Reland of Skip paint property update and visual rect update if no geometry change

third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp

Index: third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
diff --git a/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp b/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
index ef27986c97a515c4c244cd3f4ad4975feed3539e..b4c3bd8d439e8abc08a8a68acfd746f3af2f884a 100644
--- a/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
+++ b/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
@@ -630,16 +630,9 @@ void PaintInvalidationState::assertFastPathAndSlowPathRectsEqual(
 
 #endif  // CHECK_FAST_PATH_SLOW_PATH_EQUALITY
 
-static const PaintPropertyTreeBuilderContext& dummyTreeBuilderContext() {
-  DEFINE_STATIC_LOCAL(PaintPropertyTreeBuilderContext, dummyContext, ());
-  return dummyContext;
-}
-
 PaintInvalidatorContextAdapter::PaintInvalidatorContextAdapter(
     const PaintInvalidationState& paintInvalidationState)
-    // The dummy parameters will be never used because the overriding
-    // mapLocalRectToVisualRectInBacking() uses PaintInvalidationState.
-    : PaintInvalidatorContext(dummyTreeBuilderContext()),
+    : PaintInvalidatorContext(nullptr),
       m_paintInvalidationState(paintInvalidationState) {
   forcedSubtreeInvalidationFlags =
       paintInvalidationState.m_forcedSubtreeInvalidationFlags;