Adjust positioning of cros tray bubbles.

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"
 #include "ui/gfx/color_palette.h"
@@ skipping 86 matching lines @@
 const int kHorizontalSeparatorHeight = 24;
 
 const SkColor kTrayPopupInkDropBaseColor = SK_ColorBLACK;
 const float kTrayPopupInkDropRippleOpacity = 0.06f;
 const float kTrayPopupInkDropHighlightOpacity = 0.08f;
 const int kTrayPopupInkDropInset = 4;
 
 int GetTrayConstant(TrayConstant constant) {
   const int kTrayItemHeightLegacy[] = {38, kTrayItemSize, kTrayItemSize};
   const int kTraySpacing[] = {4, 0, 0};
-  const int kTrayPaddingFromEdgeOfShelf[] = {3, 4, 4};
+  const int kTrayPaddingFromEdgeOfShelf[] = {3, 3, 3};

[tdanderson, 2016/11/14 04:03:21]

With this change, can you check that the system menu is still clickable when the
mouse cursor is in the very bottom right corner of the screen (for a horizontal
or right-aligned shelf) and in the very bottom left corner of the screen (for a
left-aligned shelf)? IIRC that is the purpose of |extended_padding| in
StatusAreaWidgetDelegate::SetBorderOnChild().

[Evan Stade, 2016/11/15 01:11:55]

it's hard to check that when chromeos is running in a window (it seems to still
work but I can't be sure I'm clicking on the cornermost pixel). That said I
don't see why this would cause a problem --- it should just move the last tray
item one dp closer to the edge.

   const int kTrayPopupItemHeight[] = {46, 48, 48};
   // FixedSizedImageViews use the contained ImageView's width for 0 values.
   const int kTrayPopupItemMainImageRegionWidth[] = {0, 48, 48};
   const int kTrayPopupItemMoreImageSize[] = {25, kMenuIconSize, kMenuIconSize};
   const int kTrayPopupItemMoreRegionHorizontalInset[] = {10, 10, 10};
   const int kTrayPopupItemLeftInset[] = {0, 4, 4};
   const int kTrayPopupItemRightInset[] = {0, 0, 0};
   const int kTrayPopupItemMinStartWidth[] = {46, 48, 48};
   const int kTrayPopupItemMinEndWidth[] = {40, 40, 40};
   const int kVirtualKeyboardButtonSize[] = {39, kTrayItemSize, kTrayItemSize};
@@ skipping 32 matching lines @@
     case TRAY_IME_MENU_ICON:
       return kTrayImeMenuIcon[mode];
     case TRAY_IMAGE_ITEM_PADDING:
       return kTrayImageItemPadding[mode];
   }
   NOTREACHED();
   return 0;
 }
 
 }  // namespace ash