Move LoadProgressTracker to the browser process.

content/browser/frame_host/navigator.h

 // Copyright 2013 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_FRAME_HOST_NAVIGATOR_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_H_
 
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_controller.h"
@@ skipping 19 matching lines @@
 // objects that are using it and will be released once all nodes that use it are
 // freed. The Navigator is bound to a single frame tree and cannot be used by
 // multiple instances of FrameTree.
 // TODO(nasko): Move all navigation methods, such as didStartProvisionalLoad
 // from WebContentsImpl to this interface.
 class CONTENT_EXPORT Navigator : public base::RefCounted<Navigator> {
  public:
   // Returns the NavigationController associated with this Navigator.
   virtual NavigationController* GetController();
 
+
+  // Notifications coming from the RenderFrameHosts ----------------------------
+
   // The RenderFrameHostImpl started a provisional load.
   virtual void DidStartProvisionalLoad(RenderFrameHostImpl* render_frame_host,
                                        int parent_routing_id,
                                        const GURL& url) {};
 
   // The RenderFrameHostImpl has failed a provisional load.
   virtual void DidFailProvisionalLoadWithError(
       RenderFrameHostImpl* render_frame_host,
       const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params) {};
 
@@ skipping 31 matching lines @@
   // If this method returns false, then the navigation is discarded (equivalent
   // to calling DiscardPendingEntry on the NavigationController).
   //
   // TODO(nasko): Remove this method from the interface, since Navigator and
   // NavigationController know about each other. This will be possible once
   // initialization of Navigator and NavigationController is properly done.
   virtual bool NavigateToPendingEntry(
       RenderFrameHostImpl* render_frame_host,
       NavigationController::ReloadType reload_type);
 
+  // The RenderFrame began loading a new page. This corresponds to Blink's
+  // notion of the throbber starting.
+  // |to_different_document| will be true unless the load is a fragment
+  // navigation, or triggered by history.pushState/replaceState.
+  virtual void DidStartLoading(RenderFrameHostImpl* render_frame_host,
+                               bool to_different_document) {}
+
+  // The RenderFrame stopped loading a page. This corresponds to Blink's notion
+  // of the throbber stopping.
+  virtual void DidStopLoading(RenderFrameHostImpl* render_frame_host) {}
+
+  // The RenderFrame reported making progress in a load.
+  virtual void DidChangeLoadProgress(RenderFrameHostImpl* render_frame_host,
+                                     double load_progress) {}
+
+
+  // Navigation requests -------------------------------------------------------
+
   virtual base::TimeTicks GetCurrentLoadStart();
 
   // The RenderFrameHostImpl has received a request to open a URL with the
   // specified |disposition|.
   virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
                               const GURL& url,
                               const Referrer& referrer,
                               WindowOpenDisposition disposition,
                               bool should_replace_current_entry,
                               bool user_gesture) {}
@@ skipping 13 matching lines @@
       bool user_gesture) {}
 
  protected:
   friend class base::RefCounted<Navigator>;
   virtual ~Navigator() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_H_