PROTOTYPE: PlzNavigate: use a Mojo data pipe to stream navigation data to the renderer.

content/browser/frame_host/navigator.h

 // 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.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/navigator_delegate.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_controller.h"
+#include "mojo/public/cpp/system/data_pipe.h"
 #include "ui/base/window_open_disposition.h"
 
 class GURL;
 struct FrameHostMsg_BeginNavigation_Params;
 struct FrameHostMsg_DidCommitProvisionalLoad_Params;
 struct FrameHostMsg_DidFailProvisionalLoadWithError_Params;
 
 namespace base {
 class TimeTicks;
 }
@@ skipping 124 matching lines @@
       const CommonNavigationParams& common_params,
       const BeginNavigationParams& begin_params,
       scoped_refptr<ResourceRequestBody> body);
 
   // PlzNavigate
   // Signal |render_frame_host| that a navigation is ready to commit (the
   // response to the navigation request has been received).
   virtual void CommitNavigation(NavigationRequest* navigation_request,
                                 ResourceResponse* response,
                                 scoped_ptr<StreamHandle> body);
+  // TODO(carlosk): there can only be one... At some point in time.
+  virtual void CommitNavigation(
+      NavigationRequest* navigation_request,
+      ResourceResponse* response,
+      mojo::ScopedDataPipeConsumerHandle data_consumer_handle,
+      int request_id);
 
   // PlzNavigate
   // Called when a NavigationRequest for |frame_tree_node| failed. An
   // appropriate RenderFrameHost should be selected and asked to show an error
   // page. |has_stale_copy_in_cache| is true if there is a stale copy of the
   // unreachable page in cache.
   virtual void FailedNavigation(FrameTreeNode* frame_tree_node,
                                 bool has_stale_copy_in_cache,
                                 int error_code) {}
 
@@ skipping 18 matching lines @@
       const base::TimeTicks& renderer_before_unload_end_time) {}
 
  protected:
   friend class base::RefCounted<Navigator>;
   virtual ~Navigator() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_H_