Fix a few clang errors while trying to build tools target.

include/core/SkUtils.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkUtils_DEFINED
 #define SkUtils_DEFINED
 
@@ skipping 96 matching lines @@
     SkAutoTrace(const char label[]) : fLabel(label) {
         SkDebugf("--- trace: %s Enter\n", fLabel);
     }
     ~SkAutoTrace() {
         SkDebugf("--- trace: %s Leave\n", fLabel);
     }
 private:
     const char* fLabel;
 };
 
-///////////////////////////////////////////////////////////////////////////////
-
-class SkAutoMemoryUsageProbe {
-public:
-    /** Record memory usage in constructor, and dump the result
-        (delta and current total) in the destructor, with the optional
-        label. NOTE: label contents are not copied, just the ptr is
-        retained, so DON'T DELETE IT.
-    */
-    SkAutoMemoryUsageProbe(const char label[]);
-    ~SkAutoMemoryUsageProbe();
-private:
-    const char* fLabel;
-    size_t      fBytesAllocated;
-};
-
 #endif