Guard against most unintentionally ephemeral SkAutoFoo instantiations.

include/core/SkString.h

Index: include/core/SkString.h
diff --git a/include/core/SkString.h b/include/core/SkString.h
index 5d975330f720da9ad5ef359b8a181d5ea00e9a1a..5629cc0464bf618cf66884ecb8776216d31d3897 100644
--- a/include/core/SkString.h
+++ b/include/core/SkString.h
@@ -235,24 +235,6 @@ private:
     static Rec* RefRec(Rec*);
 };
 
-class SkAutoUCS2 {
-public:
-    SkAutoUCS2(const char utf8[]);
-    ~SkAutoUCS2();
-
-    /** This returns the number of ucs2 characters
-    */
-    int count() const { return fCount; }
-
-    /** This returns a null terminated ucs2 string
-    */
-    const uint16_t* getUCS2() const { return fUCS2; }
-
-private:
-    int         fCount;
-    uint16_t*   fUCS2;
-};
-
 /// Creates a new string and writes into it using a printf()-style format.
 SkString SkStringPrintf(const char* format, ...);