Route touch-events for WebViewGuest directly to guest renderer.

content/browser/browser_plugin/browser_plugin_guest.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A BrowserPluginGuest is the browser side of a browser <--> embedder
 // renderer channel. A BrowserPlugin (a WebPlugin) is on the embedder
 // renderer side of browser <--> embedder renderer communication.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. Any
 // messages about the guest render process that the embedder might be interested
@@ skipping 169 matching lines @@
   int LoadURLWithParams(
       const NavigationController::LoadURLParams& load_params) override;
   void GuestResizeDueToAutoResize(const gfx::Size& new_size) override;
   void SizeContents(const gfx::Size& new_size) override;
   void WillDestroy() override;
 
   // Exposes the protected web_contents() from WebContentsObserver.
   WebContentsImpl* GetWebContents() const;
 
   gfx::Point GetScreenCoordinates(const gfx::Point& relative_position) const;
+  gfx::PointF GetScreenCoordinates(const gfx::PointF& relative_position) const;

[tdresser, 2015/11/02 15:38:24]

It's a shame that we need both of these - I assume it would be annoying to get
rid of the one returning gfx::Point?

[wjmaclean, 2015/11/02 19:23:10]

In the context of this CL, yes. Though worth looking at in a follow-on CL.

 
   // This method is called by the RenderWidgetHostViewGuest to inform the
   // BrowserPlugin of the potential location of the context menu event (to
   // come). The need for this (hack) is that the input events when passed on to
   // the BrowserPlugin are modified by any CSS transforms applied on the plugin.
   // Therefore, the coordinates of the context menu event with respect to the
   // container window are modifed with the guest renderer process beiung unaware
   // of the change. Then eventually, when the context menu event arrives at the
   // browser, it contains the wrong coordinates (BUG=470087).
   // TODO(ekaramad): Find a more fundamental solution and remove this later.
@@ skipping 272 matching lines @@
   // Weak pointer used to ask GeolocationPermissionContext about geolocation
   // permission.
   base::WeakPtrFactory<BrowserPluginGuest> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_