Content Shell: Introduce LayoutTestURLRequestContextGetter.

content/shell/browser/layout_test/layout_test_browser_context.h

Index: content/shell/browser/layout_test/layout_test_browser_context.h
diff --git a/content/shell/browser/layout_test/layout_test_browser_context.h b/content/shell/browser/layout_test/layout_test_browser_context.h
index 30b7a42dae76f3df8097a4e9787392758cc139ee..3e0e9994f3b92941fe9e96a181dd0371105f776b 100644
--- a/content/shell/browser/layout_test/layout_test_browser_context.h
+++ b/content/shell/browser/layout_test/layout_test_browser_context.h
@@ -24,6 +24,11 @@ class LayoutTestBrowserContext : public ShellBrowserContext {
   // BrowserContext implementation.
   virtual DownloadManagerDelegate* GetDownloadManagerDelegate() override;
 
+ protected:
+  virtual ShellURLRequestContextGetter* CreateURLRequestContextGetter(
+      ProtocolHandlerMap* protocol_handlers,
+      URLRequestInterceptorScopedVector request_interceptors) override;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(LayoutTestBrowserContext);
 };