Remove EPM:all_hosts_ and use all_extension_views_ instead.

content/public/browser/render_widget_host.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_PUBLIC_BROWSER_RENDER_WIDGET_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_H_
 #pragma once
 
 #include "base/callback.h"
 #include "content/common/content_export.h"
@@ skipping 206 matching lines @@
   virtual RenderProcessHost* GetProcess() const = 0;
 
   virtual int GetRoutingID() const = 0;
 
   // Gets the View of this RenderWidgetHost. Can be NULL, e.g. if the
   // RenderWidget is being destroyed or the render process crashed. You should
   // never cache this pointer since it can become NULL if the renderer crashes,
   // instead you should always ask for it using the accessor.
   virtual RenderWidgetHostView* GetView() const = 0;
 
+  // Returns true if the renderer is loading, false if not.
+  virtual bool IsLoading() const = 0;
+
   // Returns true if this is a RenderViewHost, false if not.
   virtual bool IsRenderView() const = 0;
 
   // This tells the renderer to paint into a bitmap and return it,
   // regardless of whether the tab is hidden or not.  It resizes the
   // web widget to match the |page_size| and then returns the bitmap
   // scaled so it matches the |desired_size|, so that the scaling
   // happens on the rendering thread.  When the bitmap is ready, the
   // renderer sends a PaintAtSizeACK to this host, and a
   // RENDER_WIDGET_HOST_DID_RECEIVE_PAINT_AT_SIZE_ACK notification is issued.
@@ skipping 45 matching lines @@
   // within content/.  This method is necessary because
   // RenderWidgetHost is the root of a diamond inheritance pattern, so
   // subclasses inherit it virtually, which removes our ability to
   // static_cast to the subclass.
   virtual RenderWidgetHostImpl* AsRenderWidgetHostImpl() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_H_