Ensure ime adapter gets connected to RWHVA

content/browser/android/render_widget_host_connector.h

 // 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.
 
 #ifndef CONTENT_BROWSER_ANDROID_RENDER_WIDGET_HOST_CONNECTOR_H_
 #define CONTENT_BROWSER_ANDROID_RENDER_WIDGET_HOST_CONNECTOR_H_
 
 #include "base/memory/weak_ptr.h"
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace content {
 
 // A base class used to connect an object of the content layer lifecycle
 // to |RenderWidgetHostViewAndroid|. The inherting class needs to
 // override |UpdateRenderProcessConnection| to set itself to the RWHVA
 // brought up foreground, and null out its reference in the RWHVA going
 // away so it won't access the object any more.
 // This class owns itself and gets deleted when WebContents is deleted.
 class RenderWidgetHostConnector {
  public:
   explicit RenderWidgetHostConnector(WebContents* web_contents);
   virtual ~RenderWidgetHostConnector();
 
+  // Establish initial connection to rwhva if it is present.
+  void Initialize();
+
   // Method to set itself to the |new_rwhva|, and null out the reference
   // in |old_rwvha|. Example:
   //
   // if (old_rwhva)
   //   old_rwhva->set_object(nullptr);
   // if (new_rwhva)
   //   new_rwhva->set_object(this);
   virtual void UpdateRenderProcessConnection(
       RenderWidgetHostViewAndroid* old_rwhva,
       RenderWidgetHostViewAndroid* new_rhwva) = 0;
 
   RenderWidgetHostViewAndroid* GetRWHVAForTesting() const;
 
  private:
   class Observer;
   std::unique_ptr<Observer> render_widget_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostConnector);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_RENDER_WIDGET_HOST_CONNECTOR_H_