[Pinch-to-zoom] Moved scale factor into PinchViewport

Source/web/FullscreenController.h

Index: Source/web/FullscreenController.h
diff --git a/Source/web/FullscreenController.h b/Source/web/FullscreenController.h
index db413cb670c68f37854ccd66bcd95c16baca2210..3b8eba293455e1f61394b40123b01af51b690893 100644
--- a/Source/web/FullscreenController.h
+++ b/Source/web/FullscreenController.h
@@ -31,6 +31,7 @@
 #ifndef FullscreenController_h
 #define FullscreenController_h
 
+#include "platform/geometry/FloatPoint.h"
 #include "platform/geometry/IntSize.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefPtr.h"
@@ -63,6 +64,7 @@ private:
 
     float m_exitFullscreenPageScaleFactor;
     WebCore::IntSize m_exitFullscreenScrollOffset;
+    WebCore::FloatPoint m_exitFullscreenPinchViewportOffset;
 
     // If set, the WebView is transitioning to fullscreen for this element.
     RefPtr<WebCore::Element> m_provisionalFullScreenElement;