Move LoadProgressTracker to the browser process.

content/browser/frame_host/navigator_impl.h

Index: content/browser/frame_host/navigator_impl.h
diff --git a/content/browser/frame_host/navigator_impl.h b/content/browser/frame_host/navigator_impl.h
index 1aa9a609c09b90bc4a08c2209c8b47074e3c56d3..386554c68607e5f1595fcef416a49f656a3d815d 100644
--- a/content/browser/frame_host/navigator_impl.h
+++ b/content/browser/frame_host/navigator_impl.h
@@ -15,6 +15,7 @@ namespace content {
 class NavigationControllerImpl;
 class NavigatorDelegate;
 struct LoadCommittedDetails;
+class LoadProgressTracker;
 
 // This class is an implementation of Navigator, responsible for managing
 // navigations in regular browser tabs.
@@ -49,6 +50,11 @@ class CONTENT_EXPORT NavigatorImpl : public Navigator {
   virtual bool NavigateToPendingEntry(
       RenderFrameHostImpl* render_frame_host,
       NavigationController::ReloadType reload_type) OVERRIDE;
+  virtual void DidStartLoading(RenderFrameHostImpl* render_frame_host,
+                               bool to_different_document) OVERRIDE;
+  virtual void DidStopLoading(RenderFrameHostImpl* render_frame_host) OVERRIDE;
+  virtual void DidChangeLoadProgress(RenderFrameHostImpl* render_frame_host,
+                                     double load_progress) OVERRIDE;
   virtual base::TimeTicks GetCurrentLoadStart() OVERRIDE;
   virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
                               const GURL& url,
@@ -67,8 +73,12 @@ class CONTENT_EXPORT NavigatorImpl : public Navigator {
       bool should_replace_current_entry,
       bool user_gesture) OVERRIDE;
 
+  LoadProgressTracker* load_progress_tracker_for_testing() {
+    return load_progress_tracker_.get();
+  }
+
  private:
-  virtual ~NavigatorImpl() {}
+  virtual ~NavigatorImpl();
 
   // Navigates to the given entry, which must be the pending entry.  Private
   // because all callers should use NavigateToPendingEntry.
@@ -92,6 +102,9 @@ class CONTENT_EXPORT NavigatorImpl : public Navigator {
   // System time at which the current load was started.
   base::TimeTicks current_load_start_;
 
+  // Reports load progress.
+  scoped_ptr<LoadProgressTracker> load_progress_tracker_;
+
   DISALLOW_COPY_AND_ASSIGN(NavigatorImpl);
 };