1. Fix memory leaks reported by running a simple test using ASAN

runtime/vm/cpuinfo_win.cc

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_OS_WINDOWS)
 
 #include "vm/cpuinfo.h"
 #include "vm/cpuid.h"
 
@@ skipping 25 matching lines @@
   CpuId::Cleanup();
 }
 
 
 bool CpuInfo::FieldContains(CpuInfoIndices idx, const char* search_string) {
   ASSERT(method_ != kCpuInfoDefault);
   return strstr(CpuId::field(idx), search_string);
 }
 
 
-bool CpuInfo::FieldContainsByString(const char* field,
-                                    const char* search_string) {
-  ASSERT(method_ != kCpuInfoDefault);
-  for (int i = 0; i < kCpuInfoMax; i++) {
-    if (strcmp(field, fields_[i]) == 0) {
-      return FieldContains(static_cast<CpuInfoIndices>(i), search_string);
-    }
-  }
-  UNIMPLEMENTED();
-  return false;
-}
-
-
 const char* CpuInfo::ExtractField(CpuInfoIndices idx) {
   ASSERT(method_ != kCpuInfoDefault);
   return CpuId::field(idx);
 }
 
 
-const char* CpuInfo::ExtractFieldByString(const char* field) {
-  ASSERT(method_ != kCpuInfoDefault);
-  for (int i = 0; i < kCpuInfoMax; i++) {
-    if (strcmp(field, fields_[i]) == 0) {
-      return ExtractField(static_cast<CpuInfoIndices>(i));
-    }
-  }
-  UNIMPLEMENTED();
-  return NULL;
-}
-
-
 bool CpuInfo::HasField(const char* field) {
   ASSERT(method_ != kCpuInfoDefault);
   return (strcmp(field, fields_[kCpuInfoProcessor]) == 0) ||
          (strcmp(field, fields_[kCpuInfoModel]) == 0) ||
          (strcmp(field, fields_[kCpuInfoHardware]) == 0) ||
          (strcmp(field, fields_[kCpuInfoFeatures]) == 0);
 }
 
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_WINDOWS)