Move load progress tracking logic to the frame tree.

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index b2e6812aecb927a79b296a431e4c840529fa12a0..67ee5d52858553fc8608c7bb5691aa1006b2411d 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -90,15 +90,6 @@ class CONTENT_EXPORT RenderFrameHostImpl
     : public RenderFrameHost,
       public BrowserAccessibilityDelegate {
  public:
-  // These values indicate the loading progress status. The minimum progress
-  // value matches what Blink's ProgressTracker has traditionally used for a
-  // minimum progress value.
-  // TODO(fdegans): Move these values to the implementation when the relevant
-  // IPCs are moved from WebContentsImpl to RenderFrameHost.
-  static const double kLoadingProgressNotStarted;
-  static const double kLoadingProgressMinimum;
-  static const double kLoadingProgressDone;
-
   // Keeps track of the state of the RenderFrameHostImpl, particularly with
   // respect to swap out.
   enum RenderFrameHostImplState {
@@ -218,16 +209,6 @@ class CONTENT_EXPORT RenderFrameHostImpl
   // call FrameTreeNode::IsLoading.
   bool is_loading() const { return is_loading_; }
 
-  // Sets this RenderFrameHost's loading progress (from 0 to 1).
-  void set_loading_progress(double loading_progress) {
-    loading_progress_ = loading_progress;
-  }
-
-  // Returns this RenderFrameHost's loading progress. This is only used by
-  // FrameTreeNode. The proper way to check a frame loading progress is to call
-  // FrameTreeNode::GetLoadingProgress.
-  double loading_progress() const { return loading_progress_; }
-
   // This returns the RenderFrameHost's owned RenderWidgetHost if it has one,
   // or else it returns nullptr.
   // If the RenderFrameHost is the page's main frame, this returns instead a
@@ -673,9 +654,6 @@ class CONTENT_EXPORT RenderFrameHostImpl
   // document or not.
   bool is_loading_;
 
-  // Used to track this RenderFrameHost's loading progress (from 0 to 1).
-  double loading_progress_;
-
   // Used to swap out or shut down this RFH when the unload event is taking too
   // long to execute, depending on the number of active frames in the
   // SiteInstance.