Revert of Refactor the loading tracking logic in WebContentsImpl.

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 c6a6c6e1ea0114e44ca8b88a6306f9991592df28..178eb326d73a826d24c332112c0d791e5ebf24f8 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -95,15 +95,6 @@ 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 {
@@ -213,26 +204,6 @@ class CONTENT_EXPORT RenderFrameHostImpl
   RenderFrameHostDelegate* delegate() { return delegate_; }
   FrameTreeNode* frame_tree_node() { return frame_tree_node_; }
 
-  // Sets this RenderFrameHost's loading state.
-  void set_is_loading(bool is_loading) {
-    is_loading_ = is_loading;
-  }
-
-  // Returns this RenderFrameHost's loading state. This method is only used by
-  // FrameTreeNode. The proper way to check whether a frame is loading is to
-  // 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
@@ -696,13 +667,6 @@ class CONTENT_EXPORT RenderFrameHostImpl
   // PlzNavigate: all navigations require a beforeUnload ACK.
   bool unload_ack_is_for_navigation_;
 
-  // Indicates whether this RenderFrameHost is in the process of loading a
-  // 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.