Adds the contextMessage field to notifications.

ui/message_center/message_center_style.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/message_center/message_center_style.h"
 
 namespace message_center {
 
 // Exported values /////////////////////////////////////////////////////////////
 
@@ skipping 20 matching lines @@
 const int kNotificationWidth = 360;
 const int kIconToTextPadding = 16;
 const int kTextTopPadding = 12;
 const int kIconBottomPadding = 16;
 
 // Text sizes.
 const int kTitleFontSize = 14;
 const int kTitleLineHeight = 20;
 const int kMessageFontSize = 12;
 const int kMessageLineHeight = 18;
+const int kContextMessageFontSize = 12;
+const int kContextMessageLineHeight = 18;
 
 // Colors.
 const SkColor kNotificationBackgroundColor = SkColorSetRGB(255, 255, 255);
 const SkColor kLegacyIconBackgroundColor = SkColorSetRGB(0xf5, 0xf5, 0xf5);
 const SkColor kRegularTextColor = SkColorSetRGB(34, 34, 34);
 const SkColor kDimTextColor = SkColorSetRGB(102, 102, 102);
+const SkColor kContextTextColor = SkColorSetRGB(80, 80, 80);
 const SkColor kFocusBorderColor = SkColorSetRGB(64, 128, 250);
 
 // Limits.
 
 gfx::Size GetImageSizeForWidth(int width, const gfx::Size& image_size) {
   const int kNotificationMaximumImageHeight =
       kNotificationWidth * kNotificationPreferredImageRatio;
 
   gfx::Size size = image_size;
   if (width > 0 && !size.IsEmpty()) {
@@ skipping 20 matching lines @@
 
 // Colors.
 const SkColor kBackgroundLightColor = SkColorSetRGB(0xf1, 0xf1, 0xf1);
 const SkColor kBackgroundDarkColor = SkColorSetRGB(0xe7, 0xe7, 0xe7);
 const SkColor kShadowColor = SkColorSetARGB(0.3 * 255, 0, 0, 0);
 const SkColor kMessageCenterBackgroundColor = SkColorSetRGB(0xee, 0xee, 0xee);
 const SkColor kFooterDelimiterColor = SkColorSetRGB(0xcc, 0xcc, 0xcc);
 const SkColor kFooterTextColor = SkColorSetRGB(0x7b, 0x7b, 0x7b);
 
 }  // namespace message_center