mac: Delete some pre-OS X 10.9 code in blink

third_party/WebKit/Source/platform/mac/ThemeMac.h

Index: third_party/WebKit/Source/platform/mac/ThemeMac.h
diff --git a/third_party/WebKit/Source/platform/mac/ThemeMac.h b/third_party/WebKit/Source/platform/mac/ThemeMac.h
index 5143918ec153b9ca0c80f548363b1e0989573abf..f9ed642df679f7803ac3a1dc6b8bf0761fe663d8 100644
--- a/third_party/WebKit/Source/platform/mac/ThemeMac.h
+++ b/third_party/WebKit/Source/platform/mac/ThemeMac.h
@@ -62,12 +62,10 @@ public:
     // Inflate an IntRect to account for any bleeding that would happen due to anti-aliasing.
     static PLATFORM_EXPORT IntRect inflateRectForAA(const IntRect&);
 
-    // Inflate an IntRect to account for its focus ring. This is only used when
-    // drawWithFrameDrawsFocusRing() returns true (otherwise, the focus ring's
-    // bounds could be accurately computed with -[NSCell focusRingMaskBoundsForFrame:inView:]).
+    // Inflate an IntRect to account for its focus ring.
+    // TODO: Consider using computing the focus ring's bounds with
+    // -[NSCell focusRingMaskBoundsForFrame:inView:]).
     static PLATFORM_EXPORT IntRect inflateRectForFocusRing(const IntRect&);
-
-    static PLATFORM_EXPORT bool drawWithFrameDrawsFocusRing();
 };
 
 } // namespace blink