Extend the TestRunner so that the manifest-src CSP directive can be tested from layout tests.

content/renderer/fetchers/manifest_fetcher.h

 // Copyright 2014 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_MANIFEST_FETCHER_H_
 #define CONTENT_RENDERER_FETCHERS_MANIFEST_FETCHER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebURLResponse.h"
 
 class GURL;
 
 namespace blink {
 class WebFrame;
 }
 
 namespace content {
 
 class ResourceFetcher;
 
 // Helper class to download a Web Manifest. When an instance is created, the
 // caller need to call Start() and wait for the passed callback to be executed.
 // If the fetch fails, the callback will be called with two empty objects.
-class ManifestFetcher {
+class CONTENT_EXPORT ManifestFetcher {
  public:
   // This will be called asynchronously after the URL has been fetched,
   // successfully or not.  If there is a failure, response and data will both be
   // empty.  |response| and |data| are both valid until the URLFetcher instance
   // is destroyed.
   typedef base::Callback<void(const blink::WebURLResponse& response,
                               const std::string& data)> Callback;
 
   explicit ManifestFetcher(const GURL& url);
   virtual ~ManifestFetcher();
 
   void Start(blink::WebFrame* frame, const Callback& callback);
   void Cancel();
 
  private:
   void OnLoadComplete(const blink::WebURLResponse& response,
                       const std::string& data);
 
   bool completed_;
   Callback callback_;
   scoped_ptr<ResourceFetcher> fetcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ManifestFetcher);
 };
 
 } // namespace content
 
 #endif // CONTENT_RENDERER_FETCHERS_MANIFEST_FETCHER_H_