Refactoring the ownership of ui::InputMethod.

ui/views/widget/native_widget_aura.cc

 // Copyright (c) 2012 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 "ui/views/widget/native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/strings/string_util.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/cursor_client.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/client/window_tree_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_observer.h"
+#include "ui/aura/window_tree_host.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
 #include "ui/base/ui_base_switches_util.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/compositor/layer.h"
 #include "ui/events/event.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font_list.h"
 #include "ui/gfx/screen.h"
 #include "ui/native_theme/native_theme_aura.h"
 #include "ui/views/drag_utils.h"
@@ skipping 238 matching lines @@
   return window_ && window_->HasCapture();
 }
 
 InputMethod* NativeWidgetAura::CreateInputMethod() {
   if (!window_)
     return NULL;
 
   if (switches::IsTextInputFocusManagerEnabled())
     return new NullInputMethod();
 
-  aura::Window* root_window = window_->GetRootWindow();
-  ui::InputMethod* host =
-      root_window->GetProperty(aura::client::kRootWindowInputMethodKey);
-  return new InputMethodBridge(this, host, true);
+  return new InputMethodBridge(this, GetHostInputMethod(), true);
 }
 
 internal::InputMethodDelegate* NativeWidgetAura::GetInputMethodDelegate() {
   return this;
 }
 
 ui::InputMethod* NativeWidgetAura::GetHostInputMethod() {
   aura::Window* root_window = window_->GetRootWindow();
-  return root_window->GetProperty(aura::client::kRootWindowInputMethodKey);
+  return root_window->GetHost()->GetInputMethod();
 }
 
 void NativeWidgetAura::CenterWindow(const gfx::Size& size) {
   if (!window_)
     return;
 
   gfx::Rect parent_bounds(window_->parent()->GetBoundsInRootWindow());
   // When centering window, we take the intersection of the host and
   // the parent. We assume the root window represents the visible
   // rect of a single screen.
@@ skipping 907 matching lines @@
   l10n_util::AdjustUIFont(&(ncm.lfCaptionFont));
   base::win::ScopedHFONT caption_font(CreateFontIndirect(&(ncm.lfCaptionFont)));
   return gfx::FontList(gfx::Font(caption_font));
 #else
   return gfx::FontList();
 #endif
 }
 
 }  // namespace internal
 }  // namespace views