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

runtime/vm/cpuinfo_android.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_ANDROID)
 
 #include "vm/cpuinfo.h"
 #include "vm/proccpuinfo.h"
 
@@ skipping 34 matching lines @@
   ProcCpuInfo::Cleanup();
 }
 
 
 bool CpuInfo::FieldContains(CpuInfoIndices idx, const char* search_string) {
   ASSERT(method_ != kCpuInfoDefault);
   return ProcCpuInfo::FieldContains(FieldName(idx), search_string);
 }
 
 
-bool CpuInfo::FieldContainsByString(const char* field,
-                                    const char* search_string) {
-  ASSERT(method_ != kCpuInfoDefault);
-  return ProcCpuInfo::FieldContains(field, search_string);
-}
-
-
 const char* CpuInfo::ExtractField(CpuInfoIndices idx) {
   ASSERT(method_ != kCpuInfoDefault);
   return ProcCpuInfo::ExtractField(FieldName(idx));
 }
 
 
-const char* CpuInfo::ExtractFieldByString(const char* field) {
-  ASSERT(method_ != kCpuInfoDefault);
-  return ProcCpuInfo::ExtractField(field);
-}
-
-
 bool CpuInfo::HasField(const char* field) {
   ASSERT(method_ != kCpuInfoDefault);
   return ProcCpuInfo::HasField(field);
 }
 
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_ANDROID)