Introduce WebInputMethodController to blink

third_party/WebKit/Source/web/WebLocalFrameImpl.h

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.h
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.h b/third_party/WebKit/Source/web/WebLocalFrameImpl.h
index 8810b98ae848a0ad7ad8fb69821f9d022d2d321c..dcec93019d6bb59628d781720966bda116282520 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.h
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.h
@@ -62,6 +62,7 @@ class WebDataSourceImpl;
 class WebDevToolsAgentImpl;
 class WebDevToolsFrontendImpl;
 class WebFrameClient;
+class WebInputMethodControllerImpl;
 class WebNode;
 class WebPerformance;
 class WebPlugin;
@@ -403,6 +404,8 @@ class WEB_EXPORT WebLocalFrameImpl final
   void setContextMenuNode(Node* node) { m_contextMenuNode = node; }
   void clearContextMenuNode() { m_contextMenuNode.clear(); }
 
+  WebInputMethodControllerImpl* inputMethodController() const;
+
   DECLARE_TRACE();
 
  private:
@@ -467,6 +470,8 @@ class WEB_EXPORT WebLocalFrameImpl final
 
   Member<Node> m_contextMenuNode;
 
+  std::unique_ptr<WebInputMethodControllerImpl> m_inputMethodController;
+
   // Oilpan: WebLocalFrameImpl must remain alive until close() is called.
   // Accomplish that by keeping a self-referential Persistent<>. It is
   // cleared upon close().