Insert pinch zoom virtual viewport layers to graphics layer tree.

Source/WebKit/chromium/src/WebSettingsImpl.h

Index: Source/WebKit/chromium/src/WebSettingsImpl.h
diff --git a/Source/WebKit/chromium/src/WebSettingsImpl.h b/Source/WebKit/chromium/src/WebSettingsImpl.h
index cd9acde491bec1c2e02ab69a1d19f7b43c8cce6f..a01ee000d151daf48a3470f17cddcce8f6ec1780 100644
--- a/Source/WebKit/chromium/src/WebSettingsImpl.h
+++ b/Source/WebKit/chromium/src/WebSettingsImpl.h
@@ -177,6 +177,8 @@ public:
     bool perTilePaintingEnabled() const { return m_perTilePaintingEnabled; }
     bool supportDeprecatedTargetDensityDPI() const { return m_supportDeprecatedTargetDensityDPI; }
 
+    int pinchOverlayScrollbarThickness() const { return m_pinchOverlayScrollbarThickness; }
+
 private:
     WebCore::Settings* m_settings;
     bool m_showFPSCounter;
@@ -189,6 +191,8 @@ private:
     bool m_doubleTapToZoomEnabled;
     bool m_perTilePaintingEnabled;
     bool m_supportDeprecatedTargetDensityDPI;
+
+    int m_pinchOverlayScrollbarThickness;

[jamesr, 2013/06/17 22:16:34]

why the newline?

[wjmaclean, 2013/06/18 14:10:53]

Done.

 };
 
 } // namespace WebKit