Extract WebWidgetTestClient out of WebTestProxyBase and WebViewTestClient.

components/test_runner/web_test_proxy.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/web_test_proxy.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "components/test_runner/accessibility_controller.h"
@@ skipping 38 matching lines @@
   view_test_runner_->Reset();
 }
 
 void WebTestProxyBase::BindTo(blink::WebLocalFrame* frame) {
   accessibility_controller_->Install(frame);
   event_sender_->Install(frame);
   text_input_controller_->Install(frame);
   view_test_runner_->Install(frame);
 }
 
-void WebTestProxyBase::GetScreenOrientationForTesting(
-    blink::WebScreenInfo& screen_info) {
-  MockScreenOrientationClient* mock_client =
-      test_interfaces_->GetTestRunner()->getMockScreenOrientationClient();
-  if (mock_client->IsDisabled())
-    return;
-  // Override screen orientation information with mock data.
-  screen_info.orientationType = mock_client->CurrentOrientationType();
-  screen_info.orientationAngle = mock_client->CurrentOrientationAngle();
-}
-
 }  // namespace test_runner