VR: Disable Overscroll Glow in VrShell

chrome/browser/android/vr_shell/vr_web_contents_observer.cc

 // Copyright 2016 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.
 
 #include "chrome/browser/android/vr_shell/vr_web_contents_observer.h"
 
 #include "chrome/browser/android/vr_shell/ui_interface.h"
 #include "chrome/browser/android/vr_shell/vr_shell.h"
 #include "content/public/browser/navigation_handle.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/render_widget_host.h"
+#include "content/public/browser/render_widget_host_view.h"
 
 namespace vr_shell {
 
 VrWebContentsObserver::VrWebContentsObserver(content::WebContents* web_contents,
                                              UiInterface* ui_interface,
                                              VrShell* vr_shell)
     : WebContentsObserver(web_contents),
       ui_interface_(ui_interface),
       vr_shell_(vr_shell) {}
 
@@ skipping 32 matching lines @@
 }
 
 void VrWebContentsObserver::WebContentsDestroyed() {
   vr_shell_->ContentWebContentsDestroyed();
 }
 
 void VrWebContentsObserver::WasHidden() {
   vr_shell_->ContentWasHidden();
 }
 
+void VrWebContentsObserver::RenderViewHostChanged(

[Charlie Reis, 2016/12/06 22:51:42]

Note that RenderViewHost is on its way out, in favor of RenderFrameHost.  I
think the version you have should be fine functionally, assuming overscroll only
happens for main frame navigations.  (It's probably also safe to use
RenderFrameHostChanged and check if it's the main frame, but we can do that
later.)

[asimjour1, 2016/12/08 16:59:15]

Overscroll only happens for the main frame navigation. I'll use
RenderFrameHostChanged in another patch. Thank you

+    content::RenderViewHost* old_host,
+    content::RenderViewHost* new_host) {
+  new_host->GetWidget()->GetView()->SetShowingOverscrollGlow(false);
+}
+
 }  // namespace vr_shell