ResourceFetcherTest: introduce FetchTestingPlatformSupport

third_party/WebKit/Source/platform/testing/weburl_loader_mock_factory_impl.h

Index: third_party/WebKit/Source/platform/testing/weburl_loader_mock_factory_impl.h
diff --git a/third_party/WebKit/Source/platform/testing/weburl_loader_mock_factory_impl.h b/third_party/WebKit/Source/platform/testing/weburl_loader_mock_factory_impl.h
index 70d07b7fe2fa845cb88a4329968350927d31e667..1b94b3247f1107d25d0efe6d13be1ad9a987e94e 100644
--- a/third_party/WebKit/Source/platform/testing/weburl_loader_mock_factory_impl.h
+++ b/third_party/WebKit/Source/platform/testing/weburl_loader_mock_factory_impl.h
@@ -32,10 +32,10 @@ class WebURLLoaderTestDelegate;
 class WebURLLoaderMockFactoryImpl : public WebURLLoaderMockFactory {
  public:
   WebURLLoaderMockFactoryImpl();
-  virtual ~WebURLLoaderMockFactoryImpl();
+  ~WebURLLoaderMockFactoryImpl() override;
 
   // WebURLLoaderMockFactory:
-  virtual WebURLLoader* createURLLoader(WebURLLoader* default_loader) override;
+  WebURLLoader* createURLLoader(WebURLLoader* default_loader) override;
   void registerURL(const WebURL& url,
                    const WebURLResponse& response,
                    const WebString& filePath = WebString()) override;
@@ -70,6 +70,8 @@ class WebURLLoaderMockFactoryImpl : public WebURLLoaderMockFactory {
     base::FilePath file_path;
   };
 
+  virtual void RunUntilIdle();
+
   // Loads the specified request and populates the response, error and data
   // accordingly.
   void LoadRequest(const WebURLRequest& request,