Switch the inheritance of WebView from WebWidget to protected.

components/test_runner/test_runner_for_specific_view.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/test_runner/test_runner_for_specific_view.h"
 
 #include <stddef.h>
 #include <limits>
 #include <utility>
 
@@ skipping 195 matching lines @@
     const v8::Local<v8::Function>& callback) {
   return base::Bind(&TestRunnerForSpecificView::PostTask,
                     weak_factory_.GetWeakPtr(),
                     base::Bind(&TestRunnerForSpecificView::InvokeV8Callback,
                                weak_factory_.GetWeakPtr(),
                                v8::UniquePersistent<v8::Function>(
                                    blink::mainThreadIsolate(), callback)));
 }
 
 void TestRunnerForSpecificView::LayoutAndPaintAsync() {
-  test_runner::LayoutAndPaintAsyncThen(web_view(), base::Closure());
+  // TODO(lfg, lukasza): TestRunnerForSpecificView assumes that there's a single
+  // WebWidget for the entire view, but with out-of-process iframes there may be
+  // multiple WebWidgets, one for each local root. We should look into making
+  // this structure more generic.
+  test_runner::LayoutAndPaintAsyncThen(
+      web_view()->mainFrame()->toWebLocalFrame()->frameWidget(),
+      base::Closure());
 }
 
 void TestRunnerForSpecificView::LayoutAndPaintAsyncThen(
     v8::Local<v8::Function> callback) {
   test_runner::LayoutAndPaintAsyncThen(
-      web_view(), CreateClosureThatPostsV8Callback(callback));
+      web_view()->mainFrame()->toWebLocalFrame()->frameWidget(),
+      CreateClosureThatPostsV8Callback(callback));
 }
 
 void TestRunnerForSpecificView::CapturePixelsAsyncThen(
     v8::Local<v8::Function> callback) {
   v8::UniquePersistent<v8::Function> persistent_callback(
       blink::mainThreadIsolate(), callback);
 
   web_test_proxy_base_->test_interfaces()->GetTestRunner()->DumpPixelsAsync(
       web_view(), base::Bind(&TestRunnerForSpecificView::CapturePixelsCallback,
                              weak_factory_.GetWeakPtr(),
@@ skipping 431 matching lines @@
 
 blink::WebView* TestRunnerForSpecificView::web_view() {
   return web_test_proxy_base_->web_view();
 }
 
 WebTestDelegate* TestRunnerForSpecificView::delegate() {
   return web_test_proxy_base_->delegate();
 }
 
 }  // namespace test_runner