MacViews: TouchBar integration for toolkit-views dialogs.

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 f77a42508261bd8904da0db45213998d91540540..5e1e285ee7c7ef03bd79dee9c5e9f1b7f92f8f78 100644
--- a/base/mac/sdk_forward_declarations.h
+++ b/base/mac/sdk_forward_declarations.h
@@ -289,6 +289,20 @@ BASE_EXPORT extern NSString* const NSAppearanceNameVibrantLight;
 
 #endif  // MAC_OS_X_VERSION_10_12
 
+// Once Chrome no longer supports OSX 10.12.0, everything within this
+// preprocessor block can be removed.
+#if !defined(MAC_OS_X_VERSION_10_12_1) || \
+    MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12_1
+
+@interface NSButton (SierraPointOneSDK)
+@property(copy) NSColor* bezelColor;
++ (instancetype)buttonWithTitle:(NSString*)title
+                         target:(id)target
+                         action:(SEL)action;
+@end
+
+#endif  // MAC_OS_X_VERSION_10_12_1
+
 // ----------------------------------------------------------------------------
 // The symbol for kCWSSIDDidChangeNotification is available in the
 // CoreWLAN.framework for OSX versions 10.6 through 10.10. The symbol is not