Make PrerenderTracker's resource_throttle_io_thread_map_ use RenderFrame IDs instead of RenderView …

content/renderer/render_frame_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/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 1102 matching lines @@
     // If the navigation is browser-initiated, the NavigationState contains the
     // correct value instead of the WebDataSource.
     //
     // TODO(davidben): Avoid this awkward duplication of state. See comment on
     // NavigationState::should_replace_current_entry().
     should_replace_current_entry =
         navigation_state->should_replace_current_entry();
   }
   request.setExtraData(
       new RequestExtraData(referrer_policy,
+                           render_view_->visibilityState(),
                            custom_user_agent,
                            was_after_preconnect_request,
                            routing_id_,
                            (frame == top_frame),
                            frame->identifier(),
                            GURL(frame->document().securityOrigin().toString()),
                            frame->parent() == top_frame,
                            frame->parent() ? frame->parent()->identifier() : -1,
                            navigation_state->allow_download(),
                            transition_type,
@@ skipping 300 matching lines @@
 void RenderFrameImpl::AddObserver(RenderFrameObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void RenderFrameImpl::RemoveObserver(RenderFrameObserver* observer) {
   observer->RenderFrameGone();
   observers_.RemoveObserver(observer);
 }
 
 }  // namespace content