Refactor the loading tracking logic in WebContentsImpl.

content/browser/frame_host/render_frame_host_impl.cc

 // 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.
 
 #include "content/browser/frame_host/render_frame_host_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
@@ skipping 86 matching lines @@
     case blink::WebTextDirectionRightToLeft:
       return base::i18n::RIGHT_TO_LEFT;
     default:
       NOTREACHED();
       return base::i18n::UNKNOWN_DIRECTION;
   }
 }
 
 }  // namespace
 
+const double RenderFrameHostImpl::kLoadingProgressNotStarted = 0.0;
+const double RenderFrameHostImpl::kLoadingProgressMinimum = 0.1;
+const double RenderFrameHostImpl::kLoadingProgressDone = 1.0;
+
 // static
 bool RenderFrameHostImpl::IsRFHStateActive(RenderFrameHostImplState rfh_state) {
   return rfh_state == STATE_DEFAULT;
 }
 
 // static
 RenderFrameHost* RenderFrameHost::FromID(int render_process_id,
                                          int render_frame_id) {
   return RenderFrameHostImpl::FromID(render_process_id, render_frame_id);
 }
@@ skipping 25 matching lines @@
       frame_tree_(frame_tree),
       frame_tree_node_(frame_tree_node),
       routing_id_(routing_id),
       render_frame_created_(false),
       navigations_suspended_(false),
       has_beforeunload_handlers_(false),
       has_unload_handlers_(false),
       override_sudden_termination_status_(false),
       is_waiting_for_beforeunload_ack_(false),
       unload_ack_is_for_navigation_(false),
+      is_loading_(false),
+      loading_progress_(kLoadingProgressNotStarted),
       accessibility_reset_token_(0),
       accessibility_reset_count_(0),
       no_create_browser_accessibility_manager_for_testing_(false),
       weak_ptr_factory_(this) {
   bool is_swapped_out = !!(flags & CREATE_RF_SWAPPED_OUT);
   bool hidden = !!(flags & CREATE_RF_HIDDEN);
   frame_tree_->RegisterRenderFrameHost(this);
   GetProcess()->AddRoute(routing_id_, this);
   g_routing_id_frame_map.Get().insert(std::make_pair(
       RenderFrameHostID(GetProcess()->GetID(), routing_id_),
@@ skipping 1724 matching lines @@
 void RenderFrameHostImpl::DidUseGeolocationPermission() {
   RenderFrameHost* top_frame = frame_tree_node()->frame_tree()->GetMainFrame();
   GetContentClient()->browser()->RegisterPermissionUsage(
       PERMISSION_GEOLOCATION,
       delegate_->GetAsWebContents(),
       GetLastCommittedURL().GetOrigin(),
       top_frame->GetLastCommittedURL().GetOrigin());
 }
 
 }  // namespace content