Notify WebContentsObservers of user interactions.

content/browser/renderer_host/render_view_host_delegate.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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/process/kill.h"
 #include "base/strings/string16.h"
 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
 #include "content/common/content_export.h"
 #include "net/base/load_states.h"
 #include "third_party/WebKit/public/platform/WebDisplayMode.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "third_party/WebKit/public/web/WebPopupType.h"
 #include "ui/base/window_open_disposition.h"
 
 class GURL;
 class SkBitmap;
 struct ViewHostMsg_CreateWindow_Params;
 struct FrameHostMsg_DidCommitProvisionalLoad_Params;
 
 namespace base {
 class ListValue;
@@ skipping 105 matching lines @@
   // Return a dummy RendererPreferences object that will be used by the renderer
   // associated with the owning RenderViewHost.
   virtual RendererPreferences GetRendererPrefs(
       BrowserContext* browser_context) const = 0;
 
   // Notification the user has made a gesture while focus was on the
   // page. This is used to avoid uninitiated user downloads (aka carpet
   // bombing), see DownloadRequestLimiter for details.
   virtual void OnUserGesture() {}
 
+  // Notification the user has performed a direct interaction while focus was on
+  // the page. This is used to inform the delegate that a user is interacting
+  // with a site.
+  virtual void OnUserInteraction(const blink::WebInputEvent::Type type) {}

[nasko, 2015/10/27 13:41:19]

The RenderViewHost object is deprecated and actively being disentangled from
RenderWidgetHost and hopefully will disappear not too far in the future. Please
move this over to the RenderWidgetHostDelegate, which is the equivalent of this
and still gets up to WebContents. It will also avoid the top through RVH, which
isn't necessary anyway.

[dominickn, 2015/10/27 23:21:53]

Done.

+
   // Notification from the renderer host that blocked UI event occurred.
   // This happens when there are tab-modal dialogs. In this case, the
   // notification is needed to let us draw attention to the dialog (i.e.
   // refocus on the modal dialog, flash title etc).
   virtual void OnIgnoredUIEvent() {}
 
   // Notification that the renderer has become unresponsive. The
   // delegate can use this notification to show a warning to the user.
   virtual void RendererUnresponsive(RenderViewHost* render_view_host) {}
 
@@ skipping 123 matching lines @@
   virtual void SetIsVirtualKeyboardRequested(bool requested) {}
   virtual bool IsVirtualKeyboardRequested();
 
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_