Avoid calling updateAllLifecyclePhasesExceptPaint in SVGImage if not needed.

third_party/WebKit/Source/core/frame/FrameView.h

Index: third_party/WebKit/Source/core/frame/FrameView.h
diff --git a/third_party/WebKit/Source/core/frame/FrameView.h b/third_party/WebKit/Source/core/frame/FrameView.h
index c46ee1d490b23307a6b1499050d4eef94e1c7fe4..87bb69c2b7529cd609808cca3c6ba869774bb794 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.h
+++ b/third_party/WebKit/Source/core/frame/FrameView.h
@@ -276,7 +276,8 @@ public:
     // If |UrlFragmentScroll| is passed in then makes the anchor element
     // focused and also visible by scrolling to it. The scroll position is
     // maintained during the frame loading process.
-    void processUrlFragment(const KURL&, UrlFragmentBehavior = UrlFragmentScroll);
+    // Returns false if the URL behavior is unchanged from last time this method was called.

[fs, 2016/05/23 21:25:56]

Maybe also mention that false is returned if the fragment is not applied/no
scroll happens et.c?

+    bool processUrlFragment(const KURL&, UrlFragmentBehavior = UrlFragmentScroll);
     void clearFragmentAnchor();
 
     // Methods to convert points and rects between the coordinate space of the layoutObject, and this view.
@@ -912,6 +913,9 @@ private:
     ScrollAnchor m_scrollAnchor;
 
     bool m_needsScrollbarsUpdate;
+
+    KURL m_currentUrl;
+    UrlFragmentBehavior m_currentUrlFragmentBehavior;
 };
 
 inline void FrameView::incrementVisuallyNonEmptyCharacterCount(unsigned count)