Use unique_ptr for Platform::CreateURLLoader

third_party/WebKit/public/platform/WebURLLoaderMockFactory.h

Index: third_party/WebKit/public/platform/WebURLLoaderMockFactory.h
diff --git a/third_party/WebKit/public/platform/WebURLLoaderMockFactory.h b/third_party/WebKit/public/platform/WebURLLoaderMockFactory.h
index 4c0716262387e0d6f11c567b2f3690146e8e0bfc..76321e620ff8b7fe76c5426afa37ffc40a37aa23 100644
--- a/third_party/WebKit/public/platform/WebURLLoaderMockFactory.h
+++ b/third_party/WebKit/public/platform/WebURLLoaderMockFactory.h
@@ -28,7 +28,8 @@ class WebURLLoaderMockFactory {
   // Create a WebURLLoader that takes care of mocked requests.
   // Non-mocked request are forwarded to given loader which should not
   // be nullptr.
-  virtual WebURLLoader* CreateURLLoader(WebURLLoader*) = 0;
+  virtual std::unique_ptr<WebURLLoader> CreateURLLoader(
+      std::unique_ptr<WebURLLoader>) = 0;
 
   // Registers a response and the file to be served when the specified URL
   // is loaded. If no file is specified then the response content will be empty.