Rounded background image fast path

third_party/WebKit/Source/core/paint/BackgroundImageGeometry.h

Index: third_party/WebKit/Source/core/paint/BackgroundImageGeometry.h
diff --git a/third_party/WebKit/Source/core/paint/BackgroundImageGeometry.h b/third_party/WebKit/Source/core/paint/BackgroundImageGeometry.h
index 9796cc3b8347ad29f000d0ef6904cf3b575c5e60..48c9bcdb594df75063a6cb26922a69e9d6b09dc5 100644
--- a/third_party/WebKit/Source/core/paint/BackgroundImageGeometry.h
+++ b/third_party/WebKit/Source/core/paint/BackgroundImageGeometry.h
@@ -19,7 +19,7 @@ class LayoutObject;
 class LayoutRect;
 
 class BackgroundImageGeometry {
-    STACK_ALLOCATED();
+    DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
 public:
     BackgroundImageGeometry()
         : m_hasNonLocalGeometry(false)
@@ -28,12 +28,12 @@ public:
     void calculate(const LayoutBoxModelObject&, const LayoutBoxModelObject* paintContainer,
         const GlobalPaintFlags, const FillLayer&, const LayoutRect& paintRect);
 
-    LayoutRect destRect() const { return m_destRect; }
-    LayoutSize tileSize() const { return m_tileSize; }
-    LayoutPoint phase() const { return m_phase; }
+    const LayoutRect& destRect() const { return m_destRect; }
+    const LayoutSize& tileSize() const { return m_tileSize; }
+    const LayoutPoint& phase() const { return m_phase; }
     // Space-size represents extra width and height that may be added to
     // the image if used as a pattern with background-repeat: space.
-    LayoutSize spaceSize() const { return m_repeatSpacing; }
+    const LayoutSize& spaceSize() const { return m_repeatSpacing; }
     // Has background-attachment: fixed. Implies that we can't always cheaply compute destRect.
     bool hasNonLocalGeometry() const { return m_hasNonLocalGeometry; }