Get rid of URLLoaderFactory in browser-side case

content/network/url_loader_impl.h

Index: content/network/url_loader_impl.h
diff --git a/content/network/url_loader_impl.h b/content/network/url_loader_impl.h
index 98337d9c3db9eba23451f5eb372bdadd121b9511..a8291b870441e8273f0668115b49fad57ad4b359 100644
--- a/content/network/url_loader_impl.h
+++ b/content/network/url_loader_impl.h
@@ -24,17 +24,20 @@ class NetToMojoPendingBuffer;
 class CONTENT_EXPORT URLLoaderImpl : public mojom::URLLoader,
                                      public net::URLRequest::Delegate {
  public:
+  // Constructs URLLoaderImpl. The created instance must be owned by the
+  // caller until Start() method is called. Once Start() is called this
+  // self-destructs itself on connection close.
   URLLoaderImpl(NetworkContext* context,
-                mojom::URLLoaderAssociatedRequest url_loader_request,
                 int32_t options,
-                const ResourceRequest& request,
-                mojom::URLLoaderClientPtr url_loader_client);
+                const ResourceRequest& request);
   ~URLLoaderImpl() override;
 
   // Called when the associated NetworkContext is going away.
   void Cleanup();
 
   // mojom::URLLoader implementation:
+  void Start(mojom::URLLoaderAssociatedRequest url_loader_request,
+             mojom::URLLoaderClientPtr url_loader_client) override;
   void FollowRedirect() override;
   void SetPriority(net::RequestPriority priority,
                    int32_t intra_priority_value) override;