ResourceFetcher: Add POST support and the ability to set headers

content/renderer/fetchers/resource_fetcher_impl.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.
 
 #ifndef CONTENT_RENDERER_FETCHERS_RESOURCE_FETCHER_H_
 #define CONTENT_RENDERER_FETCHERS_RESOURCE_FETCHER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 13 matching lines @@
 class WebURLLoader;
 struct WebURLError;
 }
 
 namespace content {
 
 class ResourceFetcherImpl : public ResourceFetcher,
                             public blink::WebURLLoaderClient {
  public:
   // ResourceFetcher implementation:
+  virtual void SetMethod(const std::string& method) OVERRIDE;
+  virtual void SetBody(const std::string& body) OVERRIDE;
+  virtual void SetHeader(const std::string& header,
+                         const std::string& value) OVERRIDE;
+  virtual void Start(blink::WebFrame* frame,
+                     blink::WebURLRequest::TargetType target_type,
+                     const Callback& callback) OVERRIDE;
   virtual void SetTimeout(const base::TimeDelta& timeout) OVERRIDE;
 
  private:
   friend class ResourceFetcher;
 
-  ResourceFetcherImpl(
-      const GURL& url, blink::WebFrame* frame,
-      blink::WebURLRequest::TargetType target_type,
-      const Callback& callback);
+  explicit ResourceFetcherImpl(const GURL& url);
 
   virtual ~ResourceFetcherImpl();
 
-  // Start the actual download.
-  void Start(const GURL& url, blink::WebFrame* frame,
-             blink::WebURLRequest::TargetType target_type);
-
   void RunCallback(const blink::WebURLResponse& response,
                    const std::string& data);
 
   // Callback for timer that limits how long we wait for the server.  If this
   // timer fires and the request hasn't completed, we kill the request.
   void TimeoutFired();
 
   // WebURLLoaderClient methods:
   virtual void willSendRequest(
       blink::WebURLLoader* loader, blink::WebURLRequest& new_request,
       const blink::WebURLResponse& redirect_response);
   virtual void didSendData(
       blink::WebURLLoader* loader, unsigned long long bytes_sent,
       unsigned long long total_bytes_to_be_sent);
   virtual void didReceiveResponse(
       blink::WebURLLoader* loader, const blink::WebURLResponse& response);
   virtual void didReceiveCachedMetadata(
       blink::WebURLLoader* loader, const char* data, int data_length);
 
   virtual void didReceiveData(
       blink::WebURLLoader* loader, const char* data, int data_length,
       int encoded_data_length);
   virtual void didFinishLoading(
       blink::WebURLLoader* loader, double finishTime);
   virtual void didFail(
       blink::WebURLLoader* loader, const blink::WebURLError& error);
 
   scoped_ptr<blink::WebURLLoader> loader_;
 
+  // Request to send.  Released once Start() is called.
+  blink::WebURLRequest request_;
+
   // Set to true once the request is complete.
   bool completed_;
 
   // Buffer to hold the content from the server.
   std::string data_;
 
   // A copy of the original resource response.
   blink::WebURLResponse response_;
 
   // Callback when we're done.
   Callback callback_;
 
   // Buffer to hold metadata from the cache.
   std::string metadata_;
 
   // Limit how long to wait for the server.
   base::OneShotTimer<ResourceFetcherImpl> timeout_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceFetcherImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_FETCHERS_RESOURCE_FETCHER_H_