[Mac] Redesign the avatar bubble UI

ui/native_theme/native_theme_win.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 "ui/native_theme/native_theme_win.h"
 
 #include <windows.h>
 #include <uxtheme.h>
 #include <vsstyle.h>
 #include <vssym32.h>
@@ skipping 32 matching lines @@
 const SkColor kInvalidColorIdColor = SkColorSetRGB(255, 0, 128);
 // Dialogs:
 const SkColor kDialogBackgroundColor = SkColorSetRGB(251, 251, 251);
 // FocusableBorder:
 const SkColor kFocusedBorderColor = SkColorSetRGB(0x4d, 0x90, 0xfe);
 const SkColor kUnfocusedBorderColor = SkColorSetRGB(0xd9, 0xd9, 0xd9);
 // Button:
 const SkColor kButtonBackgroundColor = SkColorSetRGB(0xde, 0xde, 0xde);
 const SkColor kButtonHighlightColor = SkColorSetARGB(200, 255, 255, 255);
 const SkColor kButtonHoverColor = SkColorSetRGB(6, 45, 117);
+const SkColor kButtonHoverBackgroundColor = SkColorSetRGB(0xEA, 0xEA, 0xEA);
 // MenuItem:
 const SkColor kEnabledMenuItemForegroundColor = SkColorSetRGB(6, 45, 117);
 const SkColor kDisabledMenuItemForegroundColor = SkColorSetRGB(161, 161, 146);
 const SkColor kFocusedMenuItemBackgroundColor = SkColorSetRGB(246, 249, 253);
 const SkColor kMenuSeparatorColor = SkColorSetARGB(50, 0, 0, 0);
 // Table:
 const SkColor kTreeSelectionBackgroundUnfocused = SkColorSetRGB(240, 240, 240);
 
 // Windows system color IDs cached and updated by the native theme.
 const int kSystemColors[] = {
@@ skipping 462 matching lines @@
     case kColorId_ButtonBackgroundColor:
       return kButtonBackgroundColor;
     case kColorId_ButtonEnabledColor:
       return system_colors_[COLOR_BTNTEXT];
     case kColorId_ButtonDisabledColor:
       return system_colors_[COLOR_GRAYTEXT];
     case kColorId_ButtonHighlightColor:
       return kButtonHighlightColor;
     case kColorId_ButtonHoverColor:
       return kButtonHoverColor;
+    case kColorId_ButtonHoverBackgroundColor:
+      return kButtonHoverBackgroundColor;
 
     // MenuItem
     case kColorId_EnabledMenuItemForegroundColor:
       return kEnabledMenuItemForegroundColor;
     case kColorId_DisabledMenuItemForegroundColor:
       return kDisabledMenuItemForegroundColor;
     case kColorId_DisabledEmphasizedMenuItemForegroundColor:
       return SK_ColorBLACK;
     case kColorId_FocusedMenuItemBackgroundColor:
       return kFocusedMenuItemBackgroundColor;
@@ skipping 1605 matching lines @@
     handle = open_theme_(NULL, L"Spin");
     break;
   default:
     NOTREACHED();
   }
   theme_handles_[theme_name] = handle;
   return handle;
 }
 
 }  // namespace ui