Add ImeMenuTray element.

ash/common/system/tray/tray_constants.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/common/system/tray/tray_constants.h"
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "base/logging.h"
 #include "third_party/skia/include/core/SkColor.h"
 
@@ skipping 11 matching lines @@
 const int kBubblePaddingVerticalBottom = 3;
 const int kBubblePaddingVerticalSide = 15;
 
 // Top inset of system tray bubble for bottom anchor alignment.
 const int kTrayBubbleAnchorTopInsetBottomAnchor = 3;
 
 const int kTrayImageItemHorizontalPaddingBottomAlignment = 1;
 const int kTrayImageItemHorizontalPaddingVerticalAlignment = 1;
 const int kTrayImageItemVerticalPaddingVerticalAlignment = 1;
 
+// Size of IME menu tray.
+const int kTrayImeIconSize = 40;
+
 // Size of tray items on the primary axis.
 const int kTrayItemSize = 32;
 
 const int kTrayLabelItemHorizontalPaddingBottomAlignment = 7;
 
 // Vertical padding between status tray items when the shelf is vertical.
 const int kTrayLabelItemVerticalPaddingVerticalAlignment = 4;
 
 const int kTrayMenuBottomRowPadding = 5;
 const int kTrayMenuBottomRowPaddingBetweenItems = -1;
@@ skipping 60 matching lines @@
     case TRAY_PADDING_FROM_EDGE_OF_SHELF:
       return kTrayPaddingFromEdgeOfShelf[mode];
     case VIRTUAL_KEYBOARD_BUTTON_SIZE:
       return kVirtualKeyboardButtonSize[mode];
   }
   NOTREACHED();
   return 0;
 }
 
 }  // namespace ash