Correctly sets the security origin for the IME window.

chrome/browser/ui/input_method/input_method_engine.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 CHROME_BROWSER_UI_INPUT_METHOD_INPUT_METHOD_ENGINE_H_
 #define CHROME_BROWSER_UI_INPUT_METHOD_INPUT_METHOD_ENGINE_H_
 
 #include <string>
 #include <vector>
 
 #include "chrome/browser/ui/ime/ime_window.h"
 #include "chrome/browser/ui/ime/ime_window_observer.h"
 #include "chrome/browser/ui/input_method/input_method_engine_base.h"
 
+namespace content {
+class RenderFrameHost;
+}  // namespace content
+
 namespace input_method {
 
 class InputMethodEngine : public InputMethodEngineBase,
                           public ui::ImeWindowObserver {
  public:
   InputMethodEngine();
 
   ~InputMethodEngine() override;
 
   // ui::IMEEngineHandlerInterface:
   bool SendKeyEvents(int context_id,
                      const std::vector<KeyboardEvent>& events) override;
   bool IsActive() const override;
   std::string GetExtensionId() const override;
 
   // Creates and shows the IME window.
   // Returns 0 for errors and |error| will contains the error message.
   int CreateImeWindow(const extensions::Extension* extension,
+                      content::RenderFrameHost* render_frame_host,
                       const std::string& url,
                       ui::ImeWindow::Mode mode,
                       const gfx::Rect& bounds,
                       std::string* error);
 
   void CloseImeWindows();
 
  private:
   // input_method::InputMethodEngineBase:
   void FocusIn(const ui::IMEEngineHandlerInterface::InputContext& input_context)
@@ skipping 18 matching lines @@
   // Tracks the current cursor bounds so that the new follow cursor window can
   // be aligned with cursor once it being created.
   gfx::Rect current_cursor_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(InputMethodEngine);
 };
 
 }  // namespace input_method
 
 #endif  // CHROME_BROWSER_UI_INPUT_METHOD_INPUT_METHOD_ENGINE_H_