Move the logic to retrieve the WebPluginContainer to LocalFrame and Node.

third_party/WebKit/Source/web/WebInputMethodControllerImpl.cpp

 // 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.
 
 #include "web/WebInputMethodControllerImpl.h"
 
 #include "core/InputTypeNames.h"
 #include "core/dom/DocumentUserGestureToken.h"
 #include "core/editing/CompositionUnderlineVectorBuilder.h"
 #include "core/editing/EditingUtilities.h"
@@ skipping 139 matching lines @@
   return web_frame_->GetFrame();
 }
 
 InputMethodController& WebInputMethodControllerImpl::GetInputMethodController()
     const {
   return GetFrame()->GetInputMethodController();
 }
 
 WebPlugin* WebInputMethodControllerImpl::FocusedPluginIfInputMethodSupported()
     const {
-  WebPluginContainerBase* container =
-      WebLocalFrameImpl::CurrentPluginContainer(GetFrame());
-  if (container && container->SupportsInputMethod())
+  WebPluginContainerBase* container = GetFrame()->GetWebPluginContainerBase();
+  if (container && container->SupportsInputMethod()) {
     return container->Plugin();
+  }
   return nullptr;
 }
 
 }  // namespace blink