Remove pinch zoom handling from the browser process

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index c745dea60d0484fe88f1b8fe0a09186210c261db..1ed80a1c192ea73e1d8267af2d5c332166813131 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -542,7 +542,6 @@ class CONTENT_EXPORT WebContentsImpl
   void HandleKeyboardEvent(const NativeWebKeyboardEvent& event) override;
   bool HandleWheelEvent(const blink::WebMouseWheelEvent& event) override;
   bool PreHandleGestureEvent(const blink::WebGestureEvent& event) override;
-  bool HandleGestureEvent(const blink::WebGestureEvent& event) override;
   void DidSendScreenRects(RenderWidgetHostImpl* rwh) override;
   BrowserAccessibilityManager* GetRootBrowserAccessibilityManager() override;
   BrowserAccessibilityManager* GetOrCreateRootBrowserAccessibilityManager()
@@ -1137,11 +1136,6 @@ class CONTENT_EXPORT WebContentsImpl
   int minimum_zoom_percent_;
   int maximum_zoom_percent_;
 
-  // The raw accumulated zoom value and the actual zoom increments made for an
-  // an in-progress pinch gesture.
-  float totalPinchGestureAmount_;
-  int currentPinchZoomStepDelta_;
-
   // The intrinsic size of the page.
   gfx::Size preferred_size_;