Remove old pinch-zoom paths from Blink

Source/core/frame/PinchViewport.h

Index: Source/core/frame/PinchViewport.h
diff --git a/Source/core/frame/PinchViewport.h b/Source/core/frame/PinchViewport.h
index ddba860bfdd38b0218c35784a47cc44480c64d6f..8a2f6de79d81a3a988e677a2082c19cd2f41e010 100644
--- a/Source/core/frame/PinchViewport.h
+++ b/Source/core/frame/PinchViewport.h
@@ -84,7 +84,7 @@ public:
         return m_innerViewportScrollLayer.get();
     }
 
-    // Sets the location of the inner viewport relative to the outer viewport. The
+    // Sets the location of the pinch viewport relative to the outer viewport. The
     // coordinates are in partial CSS pixels.
     void setLocation(const FloatPoint&);
     // FIXME: This should be called moveBy
@@ -92,6 +92,12 @@ public:
     void move(const FloatSize&);
     FloatPoint location() const { return m_offset; }
 
+    // Sets the location of the pinch viewport relative to the document. This
+    // will attempt to scroll the root FrameView such that the pinch viewport
+    // is at the given location. It will then scroll the pinch viewport if
+    // scrolling only the root FrameView couldn't reach the location.
+    void setLocationInDocument(const DoublePoint&);
+
     // Sets the size of the inner viewport when unscaled in CSS pixels.
     void setSize(const IntSize&);
     IntSize size() const { return m_size; }