Use system properties for heap profiler in Android instead of environment variables.

third_party/tcmalloc/chromium/src/deep-heap-profile.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // ---
 // Author: Sainbayar Sukhbaatar
 //         Dai Mikurube
 //
 // This file contains a class DeepHeapProfile and its public function
 // DeepHeapProfile::FillOrderedProfile() which works as an alternative of
@@ skipping 19 matching lines @@
 #ifndef BASE_DEEP_HEAP_PROFILE_H_
 #define BASE_DEEP_HEAP_PROFILE_H_
 
 #include "config.h"
 
 #if defined(TYPE_PROFILING)
 #include <typeinfo>
 #endif
 
 #if defined(__linux__)
-#define DEEP_HEAP_PROFILE 1
+#define USE_DEEP_HEAP_PROFILE 1
 #endif
 
 #include "addressmap-inl.h"
 #include "heap-profile-table.h"
 #include "memory_region_map.h"
 
 class DeepHeapProfile {
  public:
   // Defines an interface for getting info about memory residence.
   class MemoryResidenceInfoGetterInterface {
@@ skipping 28 matching lines @@
   // Fills deep profile dump into |raw_buffer| of |buffer_size|, and return the
   // actual size occupied by the dump in |raw_buffer|.  It works as an
   // alternative of HeapProfileTable::FillOrderedProfile.  |raw_buffer| is not
   // terminated by zero.
   //
   // In addition, a list of buckets is dumped into a ".buckets" file in
   // descending order of allocated bytes.
   int FillOrderedProfile(char raw_buffer[], int buffer_size);
 
  private:
-#ifdef DEEP_HEAP_PROFILE
+#ifdef USE_DEEP_HEAP_PROFILE
   typedef HeapProfileTable::Stats Stats;
   typedef HeapProfileTable::Bucket Bucket;
   typedef HeapProfileTable::AllocValue AllocValue;
   typedef HeapProfileTable::AllocationMap AllocationMap;
 
   enum MapsRegionType {
     // Bytes of memory which were not recognized with /proc/<pid>/maps.
     // This size should be 0.
     ABSENT,
 
@@ skipping 201 matching lines @@
 
   // Process ID of the last dump.  This can change by fork.
   pid_t most_recent_pid_;
 
   GlobalStats stats_;      // Stats about total memory.
   int dump_count_;         // The number of dumps.
   char* filename_prefix_;  // Output file prefix.
   char* profiler_buffer_;  // Buffer we use many times.
 
   DeepBucketTable deep_table_;
-#endif  // DEEP_HEAP_PROFILE
+#endif  // USE_DEEP_HEAP_PROFILE
 
   HeapProfileTable* heap_profile_;
 
   DISALLOW_COPY_AND_ASSIGN(DeepHeapProfile);
 };
 
 #endif  // BASE_DEEP_HEAP_PROFILE_H_