Adds the contextMessage field to notifications.

ui/message_center/message_center_style.h

 // 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.
 
 #ifndef UI_MESSAGE_CENTER_MESSAGE_CENTER_STYLE_H_
 #define UI_MESSAGE_CENTER_MESSAGE_CENTER_STYLE_H_
 
 #include "base/basictypes.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/size.h"
@@ skipping 25 matching lines @@
 // Within a notification ///////////////////////////////////////////////////////
 
 // DIP dimensions (H = horizontal, V = vertical).
 extern const int kControlButtonSize;  // Square size of close & expand buttons.
 extern const int kIconToTextPadding;  // H space between icon & title/message.
 extern const int kTextTopPadding;     // V space between text elements.
 extern const int kIconBottomPadding;  // Minimum non-zero V space between icon
                                       // and frame.
 
 // Text sizes.
-extern const int kTitleFontSize;      // For title only.
-extern const int kTitleLineHeight;    // In DIPs.
-extern const int kMessageFontSize;    // For everything but title.
-extern const int kMessageLineHeight;  // In DIPs.
+extern const int kTitleFontSize;             // For title only.
+extern const int kTitleLineHeight;           // In DIPs.
+extern const int kMessageFontSize;           // For everything but title.
+extern const int kMessageLineHeight;         // In DIPs.
 
 // Colors.
 extern const SkColor kNotificationBackgroundColor; // Background of the card.
 extern const SkColor kLegacyIconBackgroundColor;   // Used behind icons smaller.
                                                    // than the icon view.
 extern const SkColor kRegularTextColor;            // Title, message, ...
 extern const SkColor kDimTextColor;
-extern const SkColor kFocusBorderColor;            // The focus border.
+extern const SkColor kFocusBorderColor;  // The focus border.
 
 // Limits.
 
 // Given the size of an image, returns the rect the image should be displayed
 // in, centered.
 gfx::Size GetImageSizeForWidth(int width, const gfx::Size& image_size);
 
 extern const int kNotificationMaximumImageHeight;  // For image notifications.
 extern const size_t kNotificationMaximumItems;     // For list notifications.
 
@@ skipping 16 matching lines @@
 const int kProgressBarThickness = 5;
 const int kProgressBarTopPadding = 16;
 const int kProgressBarCornerRadius = 3;
 const SkColor kProgressBarBackgroundColor = SkColorSetRGB(216, 216, 216);
 const SkColor kProgressBarSliceColor = SkColorSetRGB(120, 120, 120);
 
 // Line limits.
 const int kTitleLineLimit = 3;
 const int kMessageCollapsedLineLimit = 3;
 const int kMessageExpandedLineLimit = 7;
+const int kContextMessageLineLimit = 1;
 
 // Around notifications ////////////////////////////////////////////////////////
 
 // DIP dimensions (H = horizontal, V = vertical).
 MESSAGE_CENTER_EXPORT extern const int kMarginBetweenItems; // H & V space
                                                             // around & between
                                                             // notifications.
 
 // Colors.
 extern const SkColor kBackgroundLightColor;  // Behind notifications, gradient
 extern const SkColor kBackgroundDarkColor;   // from light to dark.
 
 extern const SkColor kShadowColor;           // Shadow in the tray.
 
 extern const SkColor kMessageCenterBackgroundColor;
 extern const SkColor kFooterDelimiterColor;  // Separator color for the tray.
 extern const SkColor kFooterTextColor;       // Text color for tray labels.
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_MESSAGE_CENTER_STYLE_H_