Make net::DataURL's MIME string check stricter

content/child/web_url_loader_impl.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_CHILD_WEB_URL_LOADER_IMPL_H_
 #define CONTENT_CHILD_WEB_URL_LOADER_IMPL_H_
 
+#include <string>
+
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebURLLoader.h"
 
+class GURL;
+
 namespace webkit_glue {
 struct ResourceResponseInfo;
 }
 
 namespace content {
 
+// Extracts the information from a data scheme URL. Exported only for testing.
+CONTENT_EXPORT bool GetInfoFromDataURL(const GURL& url,
+                                       webkit_glue::ResourceResponseInfo* info,
+                                       std::string* data,
+                                       int* error_code);
+
 class WebURLLoaderImpl : public blink::WebURLLoader {
  public:
   WebURLLoaderImpl();
   virtual ~WebURLLoaderImpl();
 
   static blink::WebURLError CreateError(const blink::WebURL& unreachable_url,
                                         bool stale_copy_in_cache,
                                         int reason);
   CONTENT_EXPORT static void PopulateURLResponse(
       const GURL& url,
@@ skipping 14 matching lines @@
   virtual void didChangePriority(blink::WebURLRequest::Priority new_priority);
 
  private:
   class Context;
   scoped_refptr<Context> context_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_WEB_URL_LOADER_IMPL_H_