Add support for dark theme in Mac Notification Center

base/mac/sdk_forward_declarations.h

Index: base/mac/sdk_forward_declarations.h
diff --git a/base/mac/sdk_forward_declarations.h b/base/mac/sdk_forward_declarations.h
index e8682caf6fa7ab0d51d801483d485c5bd8369757..c7e6cda7194ff5a4c577216b9258ad16468ce61d 100644
--- a/base/mac/sdk_forward_declarations.h
+++ b/base/mac/sdk_forward_declarations.h
@@ -244,8 +244,17 @@ enum {
 + (BOOL)screensHaveSeparateSpaces;
 @end
 
+// 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<NSObject>
++ (id<NSObject>)appearanceNamed:(NSString*)name;
+@end
+
 @interface NSView (MavericksSDK)
 - (void)setCanDrawSubviewsIntoLayer:(BOOL)flag;
+- (id<CrNSAppearance>)effectiveAppearance;

[Robert Sesek, 2014/09/15 18:02:37]

Actually, this needs to go into the 10.10 section below.

[dewittj, 2014/09/15 19:15:08]

Really?
https://developer.apple.com/library/mac/documentation/AppKit/Reference/NSAppe...
shows effectiveappearance "Available in OS X v10.9 and later".

[Robert Sesek, 2014/09/15 19:40:56]

Oh, my mistake. I skimmed the 10.10 API diffs too quickly.

 @end
 
 enum {
@@ -271,6 +280,8 @@ typedef NSUInteger NSWindowOcclusionState;
 
 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_