Add support for reading blobs when using the network service.

content/browser/url_loader_factory_getter.h

Index: content/browser/url_loader_factory_getter.h
diff --git a/content/browser/url_loader_factory_getter.h b/content/browser/url_loader_factory_getter.h
index 1b1fb72abee9fbe1aec4b580897f2e409e31a9f4..0af16fd5b7d97277ebd80b63cef6598c53beef2e 100644
--- a/content/browser/url_loader_factory_getter.h
+++ b/content/browser/url_loader_factory_getter.h
@@ -33,6 +33,10 @@ class URLLoaderFactoryGetter
   // The pointer shouldn't be cached.
   mojom::URLLoaderFactoryPtr* GetNetworkFactory();
 
+  // Called on the IO thread to get the URLLoaderFactory to the blob service.
+  // The pointer shouldn't be cached.
+  CONTENT_EXPORT mojom::URLLoaderFactoryPtr* GetBlobFactory();
+
   // Overrides the network URLLoaderFactory for subsequent requests. Passing a
   // null pointer will restore the default behavior.
   // This is called on the UI thread.
@@ -50,14 +54,16 @@ class URLLoaderFactoryGetter
   CONTENT_EXPORT ~URLLoaderFactoryGetter();
   void InitializeOnIOThread(
       mojom::URLLoaderFactoryPtrInfo network_factory,
+      mojom::URLLoaderFactoryPtrInfo blob_factory,
       scoped_refptr<ChromeAppCacheService> appcache_service);
   void SetTestNetworkFactoryOnIOThread(
       mojom::URLLoaderFactoryPtrInfo test_factory);
 
   // Only accessed on IO thread.
   mojom::URLLoaderFactoryPtr network_factory_;
-  mojom::URLLoaderFactoryPtr test_factory_;
   mojom::URLLoaderFactoryPtr appcache_factory_;
+  mojom::URLLoaderFactoryPtr blob_factory_;
+  mojom::URLLoaderFactoryPtr test_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(URLLoaderFactoryGetter);
 };