Add support for dark theme in Mac Notification Center

base/mac/sdk_forward_declarations.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.
 
 // This file contains forward declarations for items in later SDKs than the
 // default one with which Chromium is built (currently 10.6).
 // If you call any function from this header, be sure to check at runtime for
 // respondsToSelector: before calling these functions (else your code will crash
 // on older OS X versions that chrome still supports).
 
@@ skipping 239 matching lines @@
 
 enum {
   NSWindowOcclusionStateVisible = 1UL << 1,
 };
 typedef NSUInteger NSWindowOcclusionState;
 
 @interface NSWindow (MavericksSDK)
 - (NSWindowOcclusionState)occlusionState;
 @end
 
+@interface NSAppearance : NSObject

[Robert Sesek, 2014/09/11 20:50:00]

You won't be able to do this, unfortunately. What I'd recommend doing is this:

// NSAppearance is a new class in the 10.9 SDK. New classes cannot be
forward-declared because
// they also require an @implementation, which would produce conflicting
linkage. Instead, just
// declare the necessary pieces of the interface as a protocol, and treat
objects of this type as id.
@protocol CrNSAppearance
- (NSString*)name;
@end

... but do that above line 247 so that you can do:

@interface NSView (MavericksSDK)
- (id<CrNSAppearance>)effectiveAppearance;
@end

[dewittj, 2014/09/12 18:16:23]

Done.

++ (NSAppearance*)appearanceNamed:(NSString*)name;
+@end
+
+@protocol NSAppearanceCustomization
+@property(retain) NSAppearance* appearance;
+@property(readonly) NSAppearance* effectiveAppearance;
+@end
+
 #endif  // MAC_OS_X_VERSION_10_9
 
 #if !defined(MAC_OS_X_VERSION_10_10) || \
     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_10
 
 @interface NSUserActivity : NSObject
 
 @property (readonly, copy) NSString* activityType;
 @property (copy) NSURL* webPageURL;
 
 @end
 
 BASE_EXPORT extern "C" NSString* const NSUserActivityTypeBrowsingWeb;
 
+BASE_EXPORT extern "C" NSString* const NSAppearanceNameVibrantDark;
+
 #endif  // MAC_OS_X_VERSION_10_10
 
 #endif  // BASE_MAC_SDK_FORWARD_DECLARATIONS_H_