Use a FrameAssociatedLoader when downloading image resources.

content/renderer/fetchers/resource_fetcher_impl.h

Index: content/renderer/fetchers/resource_fetcher_impl.h
diff --git a/content/renderer/fetchers/resource_fetcher_impl.h b/content/renderer/fetchers/resource_fetcher_impl.h
index 8064c1a28094abea73a0336270553a8eae46b3c0..46e4d8bfcf7069fa34bb039a7f43c474e382ed04 100644
--- a/content/renderer/fetchers/resource_fetcher_impl.h
+++ b/content/renderer/fetchers/resource_fetcher_impl.h
@@ -16,6 +16,7 @@
 #include "content/renderer/fetchers/web_url_loader_client_impl.h"
 #include "third_party/WebKit/public/platform/WebURLRequest.h"
 #include "third_party/WebKit/public/platform/WebURLResponse.h"
+#include "third_party/WebKit/public/web/WebURLLoaderOptions.h"
 
 class GURL;
 
@@ -23,6 +24,7 @@ namespace blink {
 class WebFrame;
 class WebURLLoader;
 struct WebURLError;
+struct WebURLLoaderOptions;
 }
 
 namespace content {
@@ -34,6 +36,7 @@ class ResourceFetcherImpl : public ResourceFetcher,
   void SetMethod(const std::string& method) override;
   void SetBody(const std::string& body) override;
   void SetHeader(const std::string& header, const std::string& value) override;
+  void SetLoaderOptions(const blink::WebURLLoaderOptions& options) override;
   void Start(blink::WebFrame* frame,
              blink::WebURLRequest::RequestContext request_context,
              blink::WebURLRequest::FrameType frame_type,
@@ -58,6 +61,9 @@ class ResourceFetcherImpl : public ResourceFetcher,
 
   scoped_ptr<blink::WebURLLoader> loader_;
 
+  // Options to send to the loader.
+  blink::WebURLLoaderOptions options_;
+
   // Request to send.  Released once Start() is called.
   blink::WebURLRequest request_;