remove some unused stuff

src/gpu/GrTemplates.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTemplates_DEFINED
 #define GrTemplates_DEFINED
 
 #include "SkTypes.h"
 
 /**
  *  Use to cast a ptr to a different type, and maintain strict-aliasing
  */
 template <typename Dst, typename Src> Dst GrTCast(Src src) {
     union {
         Src src;
         Dst dst;
     } data;
     data.src = src;
     return data.dst;
 }
 
-/**
- * takes a T*, saves the value it points to,  in and restores the value in the
- * destructor
- * e.g.:
- * {
- *      GrAutoTRestore<int*> autoCountRestore;
- *      if (useExtra) {
- *          autoCountRestore.reset(&fCount);
- *          fCount += fExtraCount;
- *      }
- *      ...
- * }  // fCount is restored
- */
-template <typename T> class GrAutoTRestore : SkNoncopyable {
-public:
-    GrAutoTRestore() : fPtr(NULL), fVal() {}
-
-    GrAutoTRestore(T* ptr) {
-        fPtr = ptr;
-        if (ptr) {
-            fVal = *ptr;
-        }
-    }
-
-    ~GrAutoTRestore() {
-        if (fPtr) {
-            *fPtr = fVal;
-        }
-    }
-
-    // restores previously saved value (if any) and saves value for passed T*
-    void reset(T* ptr) {
-        if (fPtr) {
-            *fPtr = fVal;
-        }
-        fPtr = ptr;
-        fVal = *ptr;
-    }
-private:
-    T* fPtr;
-    T  fVal;
-};
-
 #endif