Allow taking screen shot of a non child window which has delegate to paint.

ash/shell.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 "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 39 matching lines @@
 #include "ash/shelf/shelf_window_watcher.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell_factory.h"
 #include "ash/shell_init_params.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/locale/locale_notification_controller.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/toast/toast_manager.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
-#include "ash/utility/partial_screenshot_controller.h"
+#include "ash/utility/screenshot_controller.h"
 #include "ash/wm/ash_focus_rules.h"
 #include "ash/wm/ash_native_cursor_manager.h"
 #include "ash/wm/aura/wm_globals_aura.h"
 #include "ash/wm/aura/wm_window_aura.h"
 #include "ash/wm/common/root_window_finder.h"
 #include "ash/wm/common/window_positioner.h"
 #include "ash/wm/event_client_impl.h"
 #include "ash/wm/lock_state_controller.h"
 #include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/wm/maximize_mode/maximize_mode_window_manager.h"
@@ skipping 732 matching lines @@
   shelf_item_delegate_manager_.reset();
   shelf_model_.reset();
 
   power_button_controller_.reset();
   lock_state_controller_.reset();
 
 #if defined(OS_CHROMEOS)
   resolution_notification_controller_.reset();
 #endif
   desktop_background_controller_.reset();
-  partial_screenshot_controller_.reset();
+  screenshot_controller_.reset();
   mouse_cursor_filter_.reset();
 
 #if defined(OS_CHROMEOS)
   touch_transformer_controller_.reset();
 #endif  // defined(OS_CHROMEOS)
 
 #if defined(OS_CHROMEOS)
   audio_a11y_controller_.reset();
 #endif  // defined(OS_CHROMEOS)
 
@@ skipping 205 matching lines @@
   power_button_controller_.reset(new PowerButtonController(
       lock_state_controller_.get()));
 #if defined(OS_CHROMEOS)
   // Pass the initial display state to PowerButtonController.
   power_button_controller_->OnDisplayModeChanged(
       display_configurator_->cached_displays());
 #endif
   AddShellObserver(lock_state_controller_.get());
 
   drag_drop_controller_.reset(new DragDropController);
-  // |partial_screenshot_controller_| needs to be created (and prepended as a
+  // |screenshot_controller_| needs to be created (and prepended as a
   // pre-target handler) at this point, because |mouse_cursor_filter_| needs to
-  // process mouse events prior to partial screenshot session.
+  // process mouse events prior to screenshot session.
   // See http://crbug.com/459214
-  partial_screenshot_controller_.reset(new PartialScreenshotController());
+  screenshot_controller_.reset(new ScreenshotController());
   mouse_cursor_filter_.reset(new MouseCursorEventFilter());
   PrependPreTargetHandler(mouse_cursor_filter_.get());
 
   // Create Controllers that may need root window.
   // TODO(oshima): Move as many controllers before creating
   // RootWindowController as possible.
   visibility_controller_.reset(new AshVisibilityController);
 
   magnification_controller_.reset(
       MagnificationController::CreateInstance());
@@ skipping 197 matching lines @@
 
 void Shell::OnWindowActivated(
     aura::client::ActivationChangeObserver::ActivationReason reason,
     aura::Window* gained_active,
     aura::Window* lost_active) {
   if (gained_active)
     target_root_window_ = gained_active->GetRootWindow();
 }
 
 }  // namespace ash