Use BrowserAssociatedInterface for mojo-loading

content/browser/loader/resource_message_filter.h

Index: content/browser/loader/resource_message_filter.h
diff --git a/content/browser/loader/resource_message_filter.h b/content/browser/loader/resource_message_filter.h
index 4037826d7b1ddf8686a94d6e88f0e0bc8191dfa2..2c41532560fc9512ac2ed7bf9d5dc656333fc549 100644
--- a/content/browser/loader/resource_message_filter.h
+++ b/content/browser/loader/resource_message_filter.h
@@ -13,6 +13,8 @@
 #include "base/sequenced_task_runner_helpers.h"
 #include "content/browser/host_zoom_level_context.h"
 #include "content/common/content_export.h"
+#include "content/common/url_loader_factory.mojom.h"
+#include "content/public/browser/browser_associated_interface.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/resource_type.h"
@@ -37,7 +39,10 @@ class ServiceWorkerContextWrapper;
 // delayed by costly UI processing that may be occuring on the main thread of
 // the browser.  It also means that any hangs in starting a network request
 // will not interfere with browser UI.
-class CONTENT_EXPORT ResourceMessageFilter : public BrowserMessageFilter {
+class CONTENT_EXPORT ResourceMessageFilter
+    : public BrowserMessageFilter,
+      public BrowserAssociatedInterface<mojom::URLLoaderFactory>,
+      public mojom::URLLoaderFactory {
  public:
   typedef base::Callback<void(ResourceType resource_type,
                               ResourceContext**,
@@ -94,6 +99,16 @@ class CONTENT_EXPORT ResourceMessageFilter : public BrowserMessageFilter {
 
   base::WeakPtr<ResourceMessageFilter> GetWeakPtr();
 
+  void CreateLoaderAndStart(mojom::URLLoaderRequest request,
+                            int32_t routing_id,
+                            int32_t request_id,
+                            const ResourceRequest& url_request,
+                            mojom::URLLoaderClientPtr client) override;
+  void SyncLoad(int32_t routing_id,
+                int32_t request_id,
+                const ResourceRequest& request,
+                const SyncLoadCallback& callback) override;
+
  protected:
   // Protected destructor so that we can be overriden in tests.
   ~ResourceMessageFilter() override;