Port IsShiftDown() and variants in views::Event to aura::Event.

ui/aura/event.h

 // Copyright (c) 2011 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_AURA_EVENT_H_
 #define UI_AURA_EVENT_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/event_types.h"
@@ skipping 11 matching lines @@
 
 class Window;
 
 class AURA_EXPORT Event {
  public:
   const base::NativeEvent& native_event() const { return native_event_; }
   ui::EventType type() const { return type_; }
   const base::Time& time_stamp() const { return time_stamp_; }
   int flags() const { return flags_; }
 
+  // The following methods return true if the respective keys were pressed at
+  // the time the event was created.
+  bool IsShiftDown() const { return (flags_ & ui::EF_SHIFT_DOWN) != 0; }
+  bool IsControlDown() const { return (flags_ & ui::EF_CONTROL_DOWN) != 0; }
+  bool IsCapsLockDown() const { return (flags_ & ui::EF_CAPS_LOCK_DOWN) != 0; }
+  bool IsAltDown() const { return (flags_ & ui::EF_ALT_DOWN) != 0; }
+
  protected:
   Event(ui::EventType type, int flags);
   Event(const base::NativeEvent& native_event, ui::EventType type, int flags);
   Event(const Event& copy);
   void set_type(ui::EventType type) { type_ = type; }
   void set_flags(int flags) { flags_ = flags; }
 
  private:
   void operator=(const Event&);
 
@@ skipping 107 matching lines @@
  private:
   ui::KeyboardCode key_code_;
   // True if this is a translated character event (vs. a raw key down). Both
   // share the same type: ui::ET_KEY_PRESSED.
   bool is_char_;
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_EVENT_H_