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

content/public/browser/resource_request_info.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_RESOURCE_REQUEST_INFO_H_
 #define CONTENT_PUBLIC_BROWSER_RESOURCE_REQUEST_INFO_H_
 
 #include "base/basictypes.h"
 #include "content/common/content_export.h"
 #include "content/public/common/page_transition_types.h"
 #include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
+#include "third_party/WebKit/public/web/WebPageVisibilityState.h"
 #include "webkit/common/resource_type.h"
 
 namespace net {
 class URLRequest;
 }
 
 namespace content {
 class ResourceContext;
 
 // Each URLRequest allocated by the ResourceDispatcherHost has a
@@ skipping 60 matching lines @@
   // Frame ID of parent frame of frame that sent this resource request.
   // -1 if unknown / invalid.
   virtual int64 GetParentFrameID() const = 0;
 
   // Returns the associated resource type.
   virtual ResourceType::Type GetResourceType() const = 0;
 
   // Returns the associated referrer policy.
   virtual blink::WebReferrerPolicy GetReferrerPolicy() const = 0;
 
+  // Returns the associated visibility state.

[davidben, 2014/01/20 20:51:57]

Nit: Maybe make the comment clear that this is the visibility state /at the time
the request was started in the renderer/. (For instance, GetVisibilityState() ==
prerender + invalid request for a prerender isn't sufficient grounds for
canceling the request. Still need to bounce back to the UI thread and get the
canonical state, as this code does.)

[jam, 2014/01/21 00:30:08]

Done.

+  virtual blink::WebPageVisibilityState GetVisibilityState() const = 0;
+
   // Returns the associated page transition type.
   virtual PageTransition GetPageTransition() const = 0;
 
   // True if the request was initiated by a user action (like a tap to follow
   // a link).
   virtual bool HasUserGesture() const = 0;
 
   // True if ResourceController::CancelAndIgnore() was called.  For example,
   // the requested URL may be being loaded by an external program.
   virtual bool WasIgnoredByHandler() const = 0;
 
   // Returns false if there is NOT an associated render frame.
   virtual bool GetAssociatedRenderFrame(int* render_process_id,
                                         int* render_frame_id) const = 0;
 
   // Returns true if this is associated with an asynchronous request.
   virtual bool IsAsync() const = 0;
 
   // Whether this is a download.
   virtual bool IsDownload() const = 0;
 
  protected:
   virtual ~ResourceRequestInfo() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RESOURCE_REQUEST_INFO_H_