Introduce the abstract class WebViewBase, to decouple WebViewImpl.

third_party/WebKit/Source/web/TextCheckerClientImpl.cpp

 // Copyright 2017 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 "web/TextCheckerClientImpl.h"
+#include "core/exported/WebViewBase.h"
 #include "public/web/WebTextCheckClient.h"
 #include "public/web/WebTextCheckingResult.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/WebTextCheckingCompletionImpl.h"
-#include "web/WebViewImpl.h"
 
 namespace blink {
 
 TextCheckerClientImpl::TextCheckerClientImpl(WebLocalFrameImpl* web_local_frame)
     : web_local_frame_(web_local_frame) {}
 
 DEFINE_TRACE(TextCheckerClientImpl) {
   visitor->Trace(web_local_frame_);
 }
 
@@ skipping 35 matching lines @@
       text, new WebTextCheckingCompletionImpl(request));
 }
 
 void TextCheckerClientImpl::CancelAllPendingRequests() {
   if (!GetWebTextCheckClient())
     return;
   GetWebTextCheckClient()->CancelAllPendingRequests();
 }
 
 }  // namespace blink