athena: Use mojo to provide the bindings for the virtual keyboard.

ui/keyboard/webui/vk_webui_controller.h

Index: ui/keyboard/webui/vk_webui_controller.h
diff --git a/athena/virtual_keyboard/vk_webui_controller.h b/ui/keyboard/webui/vk_webui_controller.h
similarity index 65%
rename from athena/virtual_keyboard/vk_webui_controller.h
rename to ui/keyboard/webui/vk_webui_controller.h
index c2c6ecc3a2b8d7bcd257e7f8951ee098101bc666..113ff1438224a2fee1d151fcde708e6d926a6073 100644
--- a/athena/virtual_keyboard/vk_webui_controller.h
+++ b/ui/keyboard/webui/vk_webui_controller.h
@@ -2,15 +2,24 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ATHENA_VIRTUAL_KEYBOARD_VK_WEBUI_CONTROLLER_H_
-#define ATHENA_VIRTUAL_KEYBOARD_VK_WEBUI_CONTROLLER_H_
+#ifndef UI_KEYBOARD_WEBUI_VK_WEBUI_CONTROLLER_H_
+#define UI_KEYBOARD_WEBUI_VK_WEBUI_CONTROLLER_H_
 
 #include "base/macros.h"
 #include "base/memory/singleton.h"
+#include "base/memory/weak_ptr.h"
 #include "content/public/browser/web_ui_controller.h"
 #include "content/public/browser/web_ui_controller_factory.h"
+#include "mojo/public/cpp/system/core.h"
+#include "ui/keyboard/keyboard_export.h"
 
-namespace athena {
+namespace content {
+class WebUIDataSource;
+}
+
+namespace keyboard {
+
+class VKMojoHandler;
 
 class VKWebUIController : public content::WebUIController {
  public:
@@ -18,10 +27,19 @@ class VKWebUIController : public content::WebUIController {
   virtual ~VKWebUIController();
 
  private:
+  void CreateAndStoreUIHandler(mojo::ScopedMessagePipeHandle handle_to_api);
+
+  // content::WebUIController:
+  virtual void RenderViewCreated(content::RenderViewHost* host) OVERRIDE;
+
+  scoped_ptr<VKMojoHandler> ui_handler_;
+  base::WeakPtrFactory<VKWebUIController> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(VKWebUIController);
 };
 
-class VKWebUIControllerFactory : public content::WebUIControllerFactory {
+class KEYBOARD_EXPORT VKWebUIControllerFactory
+    : public content::WebUIControllerFactory {
  public:
   // WebUIControllerFactory:
   virtual content::WebUI::TypeID GetWebUIType(
@@ -47,6 +65,6 @@ class VKWebUIControllerFactory : public content::WebUIControllerFactory {
   DISALLOW_COPY_AND_ASSIGN(VKWebUIControllerFactory);
 };
 
-}  // namespace athena
+}  // namespace keyboard
 
-#endif  // ATHENA_VIRTUAL_KEYBOARD_VK_WEBUI_CONTROLLER_H_
+#endif  // UI_KEYBOARD_WEBUI_VK_WEBUI_CONTROLLER_H_