Add a flag indicating locally-created fonts to SkCreateTypefaceFromCTFont

src/ports/SkFontHost_mac.cpp

Index: src/ports/SkFontHost_mac.cpp
diff --git a/src/ports/SkFontHost_mac.cpp b/src/ports/SkFontHost_mac.cpp
index 4e573541ca2780b2a9383a9e471a1cb294317e58..2dea5d0802c14dd17eeaa94db58f83d9a1a1d46a 100755
--- a/src/ports/SkFontHost_mac.cpp
+++ b/src/ports/SkFontHost_mac.cpp
@@ -575,7 +575,14 @@ SkTypeface* SkCreateTypefaceFromCTFont(CTFontRef fontRef) {
     if (face) {
         face->ref();
     } else {
-        face = NewFromFontRef(fontRef, NULL, false);
+        bool isLocal = false;
+        AutoCFRelease<CTFontDescriptorRef> fontDescriptor(CTFontCopyFontDescriptor(fontRef));
+        AutoCFRelease<CFTypeRef> priority(CTFontDescriptorCopyAttribute(fontDescriptor, kCTFontPriorityAttribute));

[reed1, 2014/10/29 15:36:33]

nit: 100cols

+        if (CFGetTypeID(priority) == CFNumberGetTypeID()) {
+            uint32_t priorityValue;
+            isLocal = CFNumberGetValue(reinterpret_cast<CFNumberRef>(priority.get()), kCFNumberSInt32Type, &priorityValue) && priorityValue >= kCTFontPriorityProcess;
+        }
+        face = NewFromFontRef(fontRef, NULL, isLocal);
         SkTypefaceCache::Add(face, face->fontStyle());
         // NewFromFontRef doesn't retain the parameter, but the typeface it
         // creates does release it in its destructor, so we balance that with