Remove window/host accessors from WED; IWYU for WTH

ui/keyboard/keyboard_util.h

 // Copyright (c) 2013 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 UI_KEYBOARD_KEYBOARD_UTIL_H_
 #define UI_KEYBOARD_KEYBOARD_UTIL_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
 // TODO(beng): replace with forward decl once RootWindow is renamed.
 #include "ui/aura/window.h"
 #include "ui/keyboard/keyboard_export.h"
 
 struct GritResourceMap;
 
 namespace aura {
-class WindowEventDispatcher;
+class WindowTreeHost;
 }
 
 class GURL;
 
 namespace keyboard {
 
 // Enumeration of swipe directions.
 enum CursorMoveDirection {
   kCursorMoveRight = 0x01,
   kCursorMoveLeft = 0x02,
@@ skipping 28 matching lines @@
 // if there is one. Returns true if |text| was successfully inserted. Note
 // that this may convert |text| into ui::KeyEvents for injection in some
 // special circumstances (i.e. VKEY_RETURN, VKEY_BACK).
 KEYBOARD_EXPORT bool InsertText(const base::string16& text,
                                 aura::Window* root_window);
 
 // Move cursor when swipe on the virtualkeyboard. Returns true if cursor was
 // successfully moved according to |swipe_direction|.
 KEYBOARD_EXPORT bool MoveCursor(int swipe_direction,
                                 int modifier_flags,
-                                aura::WindowEventDispatcher* dispatcher);
+                                aura::WindowTreeHost* host);
 
 // Sends a fabricated key event, where |type| is the event type, |key_value|
 // is the unicode value of the character, |key_code| is the legacy key code
 // value, |key_name| is the name of the key as defined in the DOM3 key event
 // specification, and |modifier| indicates if any modifier keys are being
 // virtually pressed. The event is dispatched to the active TextInputClient
 // associated with |root_window|. The type may be "keydown" or "keyup".
 KEYBOARD_EXPORT bool SendKeyEvent(std::string type,
                                    int key_value,
                                    int key_code,
                                    std::string key_name,
                                    int modifiers,
-                                   aura::WindowEventDispatcher* dispatcher);
+                                   aura::WindowTreeHost* host);
 
 // Marks that the keyboard load has started. This is used to measure the time it
 // takes to fully load the keyboard. This should be called before
 // MarkKeyboardLoadFinished.
 KEYBOARD_EXPORT const void MarkKeyboardLoadStarted();
 
 // Marks that the keyboard load has ended. This finishes measuring that the
 // keyboard is loaded.
 KEYBOARD_EXPORT const void MarkKeyboardLoadFinished();
 
 // Get the list of keyboard resources. |size| is populated with the number of
 // resources in the returned array.
 KEYBOARD_EXPORT const GritResourceMap* GetKeyboardExtensionResources(
     size_t* size);
 
 // Sets the override content url.
 // This is used by for input view for extension IMEs.
 KEYBOARD_EXPORT void SetOverrideContentUrl(const GURL& url);
 
 // Gets the override content url.
 KEYBOARD_EXPORT const GURL& GetOverrideContentUrl();
 
 // Logs the keyboard control event as a UMA stat.
 void LogKeyboardControlEvent(KeyboardControlEvent event);
 
 }  // namespace keyboard
 
 #endif  // UI_KEYBOARD_KEYBOARD_UTIL_H_