Introduce ResourceRequesterInfo to abstract the requester of resource request

content/browser/loader/url_loader_factory_impl.h

Index: content/browser/loader/url_loader_factory_impl.h
diff --git a/content/browser/loader/url_loader_factory_impl.h b/content/browser/loader/url_loader_factory_impl.h
index e989c3d872b7cb1d63d84ce875eb72dfb61212b3..539d2541fe1f359925e8f2389dfb12c690207438 100644
--- a/content/browser/loader/url_loader_factory_impl.h
+++ b/content/browser/loader/url_loader_factory_impl.h
@@ -12,7 +12,7 @@
 
 namespace content {
 
-class ResourceMessageFilter;
+class ResourceRequesterInfo;
 
 // This class is an implementation of mojom::URLLoaderFactory that creates
 // a mojom::URLLoader.
@@ -37,24 +37,24 @@ class URLLoaderFactoryImpl final : public mojom::URLLoaderFactory {
       int32_t request_id,
       const ResourceRequest& url_request,
       mojom::URLLoaderClientAssociatedPtrInfo client_ptr_info,
-      ResourceMessageFilter* filter);
+      std::unique_ptr<ResourceRequesterInfo> requester_info);
   static void SyncLoad(int32_t routing_id,
                        int32_t request_id,
                        const ResourceRequest& request,
                        const SyncLoadCallback& callback,
-                       ResourceMessageFilter* filter);
+                       std::unique_ptr<ResourceRequesterInfo> requester_info);
 
   // Creates a URLLoaderFactoryImpl instance. The instance is held by the
   // StrongBinding in it, so this function doesn't return the instance.
   CONTENT_EXPORT static void Create(
-      scoped_refptr<ResourceMessageFilter> resource_message_filter,
+      std::unique_ptr<ResourceRequesterInfo> requester_info,
       mojom::URLLoaderFactoryRequest request);
 
  private:
   explicit URLLoaderFactoryImpl(
-      scoped_refptr<ResourceMessageFilter> resource_message_filter);
+      std::unique_ptr<ResourceRequesterInfo> requester_info);
 
-  scoped_refptr<ResourceMessageFilter> resource_message_filter_;
+  std::unique_ptr<ResourceRequesterInfo> requester_info_;
 
   DISALLOW_COPY_AND_ASSIGN(URLLoaderFactoryImpl);
 };