Adds TCMalloc support for Android.

third_party/tcmalloc/chromium/src/malloc_hook.cc

Index: third_party/tcmalloc/chromium/src/malloc_hook.cc
diff --git a/third_party/tcmalloc/chromium/src/malloc_hook.cc b/third_party/tcmalloc/chromium/src/malloc_hook.cc
index 2f8608e41b0dac2c22f3bf01189dfda6b37e5a25..144008927570fbe4d3a854a008512fe2e12ab08a 100644
--- a/third_party/tcmalloc/chromium/src/malloc_hook.cc
+++ b/third_party/tcmalloc/chromium/src/malloc_hook.cc
@@ -1,10 +1,10 @@
 // Copyright (c) 2005, Google Inc.
 // All rights reserved.
-// 
+//
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
-// 
+//
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ -14,7 +14,7 @@
 //     * Neither the name of Google Inc. nor the names of its
 // contributors may be used to endorse or promote products derived from
 // this software without specific prior written permission.
-// 
+//
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -694,7 +694,7 @@ extern "C" int MallocHook_GetCallerStackTrace(void** result, int max_depth,
 // to provide support for calling the related hooks (in addition,
 // of course, to doing what these functions normally do).
 
-#if defined(__linux)
+#if defined(__linux) && !defined(__ANDROID__)
 # include "malloc_hook_mmap_linux.h"
 
 #elif defined(__FreeBSD__)