Switch the inheritance of WebViewClient from WebWidgetClient to protected.

third_party/WebKit/Source/web/tests/LinkSelectionTest.cpp

 // Copyright (c) 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 "core/dom/Range.h"
 #include "core/frame/FrameView.h"
 #include "core/input/EventHandler.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/ContextMenuController.h"
 #include "core/page/FocusController.h"
@@ skipping 90 matching lines @@
 class LinkSelectionTest : public LinkSelectionTestBase {
 protected:
     void SetUp() override
     {
         const char* const kHTMLString =
             "<a id='link' href='foo.com' style='font-size:20pt'>Text to select foobar</a>"
             "<div id='page_text'>Lorem ipsum dolor sit amet</div>";
 
         // We need to set deviceSupportsMouse setting to true and page's focus controller to active
         // so that FrameView can set the mouse cursor.
-        m_webView = m_helper.initialize(false, &m_testFrameClient, nullptr,
+        m_webView = m_helper.initialize(false, &m_testFrameClient, nullptr, nullptr,
             [](WebSettings* settings) { settings->setDeviceSupportsMouse(true); });
         m_mainFrame = m_webView->mainFrameImpl();
         FrameTestHelpers::loadHTMLString(m_mainFrame, kHTMLString, URLTestHelpers::toKURL("http://foobar.com"));
         m_webView->resize(WebSize(800, 600));
         m_webView->page()->focusController().setActive(true);
 
         auto* document = m_mainFrame->frame()->document();
         ASSERT_NE(nullptr, document);
         auto* linkToSelect = document->getElementById("link")->firstChild();
         ASSERT_NE(nullptr, linkToSelect);
@@ skipping 183 matching lines @@
         checkMouseClicks(*element, false);
     }
 
     {
         SCOPED_TRACE("Text div, double click");
         checkMouseClicks(*element, true);
     }
 }
 
 } // namespace blink