Use mojo for Chrome Loading, Part 1

content/browser/loader/async_resource_handler.h

Index: content/browser/loader/async_resource_handler.h
diff --git a/content/browser/loader/async_resource_handler.h b/content/browser/loader/async_resource_handler.h
index 0991021336043dc8b4d990a24352ca6408aaa22d..7a905a366feb6444e8391b0b3c671e69d6375727 100644
--- a/content/browser/loader/async_resource_handler.h
+++ b/content/browser/loader/async_resource_handler.h
@@ -34,7 +34,8 @@ class AsyncResourceHandler : public ResourceHandler,
                              public ResourceMessageDelegate {
  public:
   AsyncResourceHandler(net::URLRequest* request,
-                       ResourceDispatcherHostImpl* rdh);
+                       ResourceDispatcherHostImpl* rdh,
+                       bool using_mojo_data_handle);
   ~AsyncResourceHandler() override;
 
   bool OnMessageReceived(const IPC::Message& message) override;
@@ -57,6 +58,7 @@ class AsyncResourceHandler : public ResourceHandler,
 
  private:
   class InliningHelper;
+  class MojoHelper;
 
   // IPC message handlers:
   void OnFollowRedirect(int request_id);
@@ -97,6 +99,8 @@ class AsyncResourceHandler : public ResourceHandler,
 
   int64_t reported_transfer_size_;
 
+  std::unique_ptr<MojoHelper> mojo_helper_;
+
   DISALLOW_COPY_AND_ASSIGN(AsyncResourceHandler);
 };