[ash-md] Applied Material Design layout to TrayItemMore system menu rows.

ash/common/system/tray/tray_constants.h

Index: ash/common/system/tray/tray_constants.h
diff --git a/ash/common/system/tray/tray_constants.h b/ash/common/system/tray/tray_constants.h
index 35225050ff51de05ad97c20d7c324d02c4a376b9..f00b7f94627a41a876b837eff7417167983abc1f 100644
--- a/ash/common/system/tray/tray_constants.h
+++ b/ash/common/system/tray/tray_constants.h
@@ -38,9 +38,12 @@ extern const int kTrayPopupAutoCloseDelayInSeconds;
 extern const int kTrayPopupAutoCloseDelayForTextInSeconds;
 extern const int kTrayPopupPaddingHorizontal;
 extern const int kTrayPopupPaddingBetweenItems;
-extern const int kTrayPopupTextSpacingVertical;
 extern const int kTrayPopupUserCardVerticalPadding;
 
+// The padding used on the left and right of labels. This applies to all labels
+// in the system menu.
+extern const int kTrayPopupLabelHorizontalPadding;
+
 // Padding used to adjust the slider position in volume row and brightness
 // row horizontally.
 extern const int kTrayPopupSliderPaddingMD;
@@ -129,6 +132,15 @@ enum TrayConstant {
   // The height of the rows in the system tray menu.
   TRAY_POPUP_ITEM_HEIGHT,
 
+  // The width used for the main image of the row. This applies to all rows
+  // in the system menu that have a main image (e.g. default and detailed).
+  TRAY_POPUP_ITEM_MAIN_IMAGE_CONTAINER_WIDTH,
+
+  // The width used for the 'more' arrow images. In general this applies to all
+  // rows in the system menu that have a 'more' image however most, if not all,
+  // are default rows.
+  TRAY_POPUP_ITEM_MORE_IMAGE_CONTAINER_WIDTH,
+
   // The left inset for all tray system menu rows.
   TRAY_POPUP_ITEM_LEFT_INSET,