Set response headers for data URL.

content/child/web_url_loader_impl.h

Index: content/child/web_url_loader_impl.h
diff --git a/content/child/web_url_loader_impl.h b/content/child/web_url_loader_impl.h
index a2c1f3c67bbed0db8c913fa30d7ed9ce877184b0..7ed35fad1eaf32030f3fc2ffe10e5c1e1f904276 100644
--- a/content/child/web_url_loader_impl.h
+++ b/content/child/web_url_loader_impl.h
@@ -5,14 +5,24 @@
 #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 content {
 
 struct ResourceResponseInfo;
 
+// Extracts the information from a data scheme URL. Returns an error code.
+// Exported only for testing.
+CONTENT_EXPORT int GetInfoFromDataURL(const GURL& url,
+                                      ResourceResponseInfo* info,
+                                      std::string* data);
+
 class WebURLLoaderImpl : public blink::WebURLLoader {
  public:
   WebURLLoaderImpl();