Switch the inheritance of WebViewClient from WebWidgetClient to protected.

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

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 34 matching lines @@
 #include "web/WebViewImpl.h"
 #include "web/tests/FrameTestHelpers.h"
 
 namespace blink {
 
 class ScrollingCoordinatorTest : public testing::Test {
 public:
     ScrollingCoordinatorTest()
         : m_baseURL("http://www.test.com/")
     {
-        m_helper.initialize(true, 0, &m_mockWebViewClient, &configureSettings);
+        m_helper.initialize(true, nullptr, &m_mockWebViewClient, nullptr, &configureSettings);
         webViewImpl()->resize(IntSize(320, 240));
 
         // OSX attaches main frame scrollbars to the VisualViewport so the VisualViewport layers need
         // to be initialized.
         webViewImpl()->updateAllLifecyclePhases();
         webViewImpl()->setRootGraphicsLayer(
             webViewImpl()->mainFrameImpl()->frame()->view()->layoutView()->compositor()->rootGraphicsLayer());
     }
 
     ~ScrollingCoordinatorTest() override
@@ skipping 558 matching lines @@
     EXPECT_FALSE(scrollLayer->shouldScrollOnMainThread());
 
     fixedPos->setInlineStyleProperty(CSSPropertyTransform, CSSValueNone);
     forceFullCompositingUpdate();
 
     EXPECT_FALSE(static_cast<LayoutBoxModelObject*>(fixedPos->layoutObject())->layer()->hasCompositedLayerMapping());
     EXPECT_TRUE(scrollLayer->shouldScrollOnMainThread());
 }
 
 } // namespace blink