Use correct WebView from TestRunner methods called via testRunner bindings.

components/test_runner/test_interfaces.cc

 // Copyright 2014 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_interfaces.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 42 matching lines @@
 
 void TestInterfaces::SetDelegate(WebTestDelegate* delegate) {
   gamepad_controller_ = GamepadController::Create(delegate);
   test_runner_->SetDelegate(delegate);
   delegate_ = delegate;
 }
 
 void TestInterfaces::BindTo(blink::WebFrame* frame) {
   if (gamepad_controller_)
     gamepad_controller_->Install(frame);
-  test_runner_->Install(frame);
   GCController::Install(frame);
 }
 
 void TestInterfaces::ResetTestHelperControllers() {
   if (gamepad_controller_)
     gamepad_controller_->Reset();
   blink::WebCache::clear();
 
   for (WebTestProxyBase* web_test_proxy_base : window_list_)
     web_test_proxy_base->Reset();
@@ skipping 76 matching lines @@
   if (!theme_engine_.get())
     theme_engine_.reset(new MockWebThemeEngine());
   return theme_engine_.get();
 }
 
 AppBannerClient* TestInterfaces::GetAppBannerClient() {
   return app_banner_client_;
 }
 
 }  // namespace test_runner