Move WebInputMethodControllerImpl to core/exported/ & break dependencies.

third_party/WebKit/Source/core/exported/WebInputMethodControllerImpl.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 WebInputMethodControllerImpl_h
 #define WebInputMethodControllerImpl_h
 
+#include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "platform/wtf/Allocator.h"
 #include "public/web/WebCompositionUnderline.h"
 #include "public/web/WebInputMethodController.h"
 
 namespace blink {
 
 class InputMethodController;
 class LocalFrame;
-class WebLocalFrameImpl;
+class WebLocalFrameBase;
 class WebPlugin;
 class WebRange;
 class WebString;
 
-class WebInputMethodControllerImpl : public WebInputMethodController {
+class CORE_EXPORT WebInputMethodControllerImpl
+    : public NON_EXPORTED_BASE(WebInputMethodController) {
   WTF_MAKE_NONCOPYABLE(WebInputMethodControllerImpl);
   DISALLOW_NEW();
 
  public:
-  explicit WebInputMethodControllerImpl(WebLocalFrameImpl& web_frame);
+  explicit WebInputMethodControllerImpl(WebLocalFrameBase& web_frame);
   ~WebInputMethodControllerImpl() override;
 
-  static WebInputMethodControllerImpl* FromFrame(LocalFrame*);
-
   // WebInputMethodController overrides.
   bool SetComposition(const WebString& text,
                       const WebVector<WebCompositionUnderline>& underlines,
                       const WebRange& replacement_range,
                       int selection_start,
                       int selection_end) override;
   bool CommitText(const WebString& text,
                   const WebVector<WebCompositionUnderline>& underlines,
                   const WebRange& replacement_range,
                   int relative_caret_position) override;
   bool FinishComposingText(
       ConfirmCompositionBehavior selection_behavior) override;
   WebTextInputInfo TextInputInfo() override;
   WebTextInputType TextInputType() override;
 
   DECLARE_TRACE();
 
  private:
   LocalFrame* GetFrame() const;
   InputMethodController& GetInputMethodController() const;
   WebPlugin* FocusedPluginIfInputMethodSupported() const;
 
-  const Member<WebLocalFrameImpl> web_frame_;
+  const Member<WebLocalFrameBase> web_frame_;
 };
 }  // namespace blink
 
 #endif