Fix more clang tautological-constant-out-of-range-compare errors.

include/core/SkXfermode.h

Index: include/core/SkXfermode.h
diff --git a/include/core/SkXfermode.h b/include/core/SkXfermode.h
index 0a0099f3e288766e257b2312ba2894246cde4b75..2c8b8a211379480b62b1f19deaa4517731c544bd 100644
--- a/include/core/SkXfermode.h
+++ b/include/core/SkXfermode.h
@@ -126,7 +126,10 @@ public:
         kColor_Mode,
         kLuminosity_Mode,
 
-        kLastMode = kLuminosity_Mode
+        kLastMode = kLuminosity_Mode,
+    };
+    enum {
+        kModeCount = kLastMode + 1

[reed1, 2013/03/28 13:13:07]

Why is this public now?

[tfarina, 2013/03/28 21:41:48]

So I can use it at line 267 of SkDrawPaint.cpp
xfermode != SkXfermode::kModeCount

     };
 
     /**
@@ -215,9 +218,6 @@ protected:
     virtual SkPMColor xferColor(SkPMColor src, SkPMColor dst) const;
 
 private:
-    enum {
-        kModeCount = kLastMode + 1
-    };
     typedef SkFlattenable INHERITED;
 };