[ash-md] Updates ash shelf tooltips to MD

ash/common/shelf/shelf_constants.h

 // Copyright 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 ASH_COMMON_SHELF_SHELF_CONSTANTS_H_
 #define ASH_COMMON_SHELF_SHELF_CONSTANTS_H_
 
 #include "ash/ash_export.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace ash {
 
 enum ShelfConstant {
   // The alpha value for the shelf background when a window is overlapping.
   SHELF_BACKGROUND_ALPHA,
 
   // Size of the shelf when visible (height when the shelf is horizontal and
   // width when the shelf is vertical).
   SHELF_SIZE,
 
   // Size of the space between buttons on the shelf.
   SHELF_BUTTON_SPACING,
 
   // Size allocated for each app button on the shelf.
   SHELF_BUTTON_SIZE,
 
   // Insets allocated for shelf when it is auto hidden.
-  SHELF_INSETS_FOR_AUTO_HIDE
+  SHELF_INSETS_FOR_AUTO_HIDE,
+
+  // Shelf item tooltip height.
+  TOOLTIP_HEIGHT,
+
+  // The maximum width of the tooltip bubble.  The value matches that from
+  // ash/tooltip/tooltip_controller.cc
+  TOOLTIP_MAX_WIDTH,
+
+  // Shelf item tooltip internal text margins.
+  TOOLTIP_TOP_BOTTOM_MARGIN,
+  TOOLTIP_LEFT_RIGHT_MARGIN,
+
+  // The offset for the tooltip bubble - making sure that the bubble is flush
+  // with the shelf (non-MD) or spaced with a fixed gap (MD). The offset
+  // includes the arrow size in pixels as well as the activation bar and other
+  // spacing elements.
+  TOOLTIP_ARROW_TOP_BOTTOM_OFFSET,
+  TOOLTIP_ARROW_LEFT_RIGHT_OFFSET,
 };
 
 // Invalid image resource id used for ShelfItemDetails.
 extern const int kInvalidImageResourceID;
 
 // We reserve a small area on the edge of the workspace area to ensure that
 // the resize handle at the edge of the window can be hit.
 extern const int kWorkspaceAreaVisibleInset;
 
 // When autohidden we extend the touch hit target onto the screen so that the
@@ skipping 43 matching lines @@
 extern const int kAppListButtonRadius;
 
 // The direction of the focus cycling.
 enum CycleDirection { CYCLE_FORWARD, CYCLE_BACKWARD };
 
 ASH_EXPORT int GetShelfConstant(ShelfConstant shelf_constant);
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SHELF_SHELF_CONSTANTS_H_