Move didFocus from WebWidgetClient to WebViewClient.

components/test_runner/web_widget_test_client.h

 // 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.
 
 #ifndef COMPONENTS_TEST_RUNNER_WEB_WIDGET_TEST_CLIENT_H_
 #define COMPONENTS_TEST_RUNNER_WEB_WIDGET_TEST_CLIENT_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "third_party/WebKit/public/web/WebWidgetClient.h"
@@ skipping 20 matching lines @@
                       WebTestProxyBase* web_test_proxy_base);
 
   virtual ~WebWidgetTestClient();
 
   // WebWidgetClient overrides needed by WebTestProxy.
   blink::WebScreenInfo screenInfo() override;
   void scheduleAnimation() override;
   bool requestPointerLock() override;
   void requestPointerUnlock() override;
   bool isPointerLocked() override;
-  void didFocus() override;
   void setToolTipText(const blink::WebString& text,
                       blink::WebTextDirection direction) override;
   void resetInputMethod() override;
 
  private:
   void AnimateNow();
 
   // Borrowed pointers to other parts of Layout Tests state.
   TestRunner* test_runner_;
   WebTestProxyBase* web_test_proxy_base_;
 
   bool animation_scheduled_;
 
   base::WeakPtrFactory<WebWidgetTestClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebWidgetTestClient);
 };
 
 }  // namespace test_runner
 
 #endif  // COMPONENTS_TEST_RUNNER_WEB_WIDGET_TEST_CLIENT_H_