Add load flag indicating a request is probably the result of a user gesture.

content/browser/renderer_host/resource_dispatcher_host.h

 // Copyright (c) 2011 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.
 
 // This is the browser side of the resource dispatcher, it receives requests
 // from the child process (i.e. [Renderer, Plugin, Worker]ProcessHost), and
 // dispatches them to URLRequests. It then forwards the messages from the
 // URLRequests back to the correct process for handling.
 //
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/time.h"
 #include "base/timer.h"
 #include "content/browser/renderer_host/resource_queue.h"
 #include "content/common/child_process_info.h"
 #include "content/common/content_notification_types.h"
 #include "ipc/ipc_message.h"
 #include "net/url_request/url_request.h"
 #include "webkit/glue/resource_type.h"
 
 class CrossSiteResourceHandler;
 class DownloadFileManager;
 class DownloadRequestLimiter;
 class LoginHandler;
 class NotificationDetails;
 class PluginService;
 class ResourceDispatcherHostDelegate;
 class ResourceDispatcherHostRequestInfo;
 class ResourceHandler;
 class ResourceMessageFilter;
 class SaveFileManager;
 class SSLClientAuthHandler;
+class TabContents;
 class WebKitThread;
 struct DownloadSaveInfo;
 struct GlobalRequestID;
 struct ResourceHostMsg_Request;
 struct ViewMsg_SwapOut_Params;
 
 namespace content {
 class ResourceContext;
 }
 namespace net {
@@ skipping 141 matching lines @@
                              const net::CookieList& cookie_list) const OVERRIDE;
   virtual bool CanSetCookie(const net::URLRequest* request,
                             const std::string& cookie_line,
                             net::CookieOptions* options) const OVERRIDE;
   virtual void OnResponseStarted(net::URLRequest* request) OVERRIDE;
   virtual void OnReadCompleted(net::URLRequest* request,
                                int bytes_read) OVERRIDE;
 
   void OnResponseCompleted(net::URLRequest* request);
 
+  void OnUserGesture(TabContents* tab);
+
   // Helper functions to get the dispatcher's request info for the request.
   // If the dispatcher didn't create the request then NULL is returned.
   static ResourceDispatcherHostRequestInfo* InfoForRequest(
       net::URLRequest* request);
   static const ResourceDispatcherHostRequestInfo* InfoForRequest(
       const net::URLRequest* request);
 
   // Extracts the render view/process host's identifiers from the given request
   // and places them in the given out params (both required). If there are no
   // such IDs associated with the request (such as non-page-related requests),
@@ skipping 281 matching lines @@
 
   // |max_outstanding_requests_cost_per_process_| is the upper bound on how
   // many outstanding requests can be issued per child process host.
   // The constraint is expressed in terms of bytes (where the cost of
   // individual requests is given by CalculateApproximateMemoryCost).
   // The total number of outstanding requests is roughly:
   //   (max_outstanding_requests_cost_per_process_ /
   //       kAvgBytesPerOutstandingRequest)
   int max_outstanding_requests_cost_per_process_;
 
+  // Time of the last user gesture. Stored so that we can add a load
+  // flag to requests occurring soon after a gesture to indicate they
+  // may be because of explicit user action.
+  base::TimeTicks last_user_gesture_time_;
+
   // Used during IPC message dispatching so that the handlers can get a pointer
   // to the source of the message.
   ResourceMessageFilter* filter_;
 
   ResourceDispatcherHostDelegate* delegate_;
 
   static bool is_prefetch_enabled_;
   bool allow_cross_origin_auth_prompt_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHost);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_H_