Bug 1284341: Add utility functions to recognize OS X 10.12. r=mstange

MozReview-Commit-ID: BZOv9lSeWq

--HG--
extra : rebase_source : bb42cbb77b77f0b73e9165c2187bfe9e13a83063

widget/GfxDriverInfo.h

@@ -57,6 +57,7 @@ enum class OperatingSystem {
   OSX10_9,
   OSX10_10,
   OSX10_11,
+  OSX10_12,
   Android,
   Ios
 };

widget/GfxInfoBase.cpp

@@ -274,6 +274,8 @@ BlacklistOSToOperatingSystem(const nsAString& os)
     return OperatingSystem::OSX10_10;
   else if (os.EqualsLiteral("Darwin 15"))
     return OperatingSystem::OSX10_11;
+  else if (os.EqualsLiteral("Darwin 16"))
+    return OperatingSystem::OSX10_12;
   else if (os.EqualsLiteral("Android"))
     return OperatingSystem::Android;
   // For historical reasons, "All" in blocklist means "All Windows"

widget/cocoa/GfxInfo.mm

@@ -52,6 +52,8 @@ OSXVersionToOperatingSystem(uint32_t aOSXVersion)
         return OperatingSystem::OSX10_10;
       case 11:
         return OperatingSystem::OSX10_11;
+      case 12:
+        return OperatingSystem::OSX10_12;
     }
   }
 

widget/cocoa/nsCocoaFeatures.h

@@ -23,6 +23,7 @@ public:
   static bool OnMavericksOrLater();
   static bool OnYosemiteOrLater();
   static bool OnElCapitanOrLater();
+  static bool OnSierraOrLater();
 
   static bool IsAtLeastVersion(int32_t aMajor, int32_t aMinor, int32_t aBugFix=0);
 

widget/cocoa/nsCocoaFeatures.mm

@@ -18,6 +18,7 @@
 #define MAC_OS_X_VERSION_10_9_HEX  0x00001090
 #define MAC_OS_X_VERSION_10_10_HEX 0x000010A0
 #define MAC_OS_X_VERSION_10_11_HEX 0x000010B0
+#define MAC_OS_X_VERSION_10_12_HEX 0x000010C0
 
 #include "nsCocoaFeatures.h"
 #include "nsCocoaUtils.h"
@@ -178,6 +179,12 @@ nsCocoaFeatures::OnElCapitanOrLater()
     return (OSXVersion() >= MAC_OS_X_VERSION_10_11_HEX);
 }
 
+/* static */ bool
+nsCocoaFeatures::OnSierraOrLater()
+{
+    return (OSXVersion() >= MAC_OS_X_VERSION_10_12_HEX);
+}
+
 /* static */ bool
 nsCocoaFeatures::IsAtLeastVersion(int32_t aMajor, int32_t aMinor, int32_t aBugFix)
 {