Adds TCMalloc support for Android.

third_party/tcmalloc/chromium/src/base/spinlock_internal.cc

Index: third_party/tcmalloc/chromium/src/base/spinlock_internal.cc
diff --git a/third_party/tcmalloc/chromium/src/base/spinlock_internal.cc b/third_party/tcmalloc/chromium/src/base/spinlock_internal.cc
index b9faddef2c6f09ea6ac234f2948bfd564ae3f425..d3135185ce427a1c2a5e5aba9125fd1c8c14140d 100644
--- a/third_party/tcmalloc/chromium/src/base/spinlock_internal.cc
+++ b/third_party/tcmalloc/chromium/src/base/spinlock_internal.cc
@@ -47,7 +47,7 @@ namespace base { namespace internal { static int SuggestedDelayNS(int loop); }}
 
 #if defined(_WIN32)
 #include "base/spinlock_win32-inl.h"
-#elif defined(__linux__)
+#elif defined(__linux__) && !defined(__ANDROID__)

[Dai Mikurube (NOT FULLTIME), 2013/05/03 08:53:00]

spinlock_linux-inl doesn't work?  How about adding a TODO since we may finally
want to use linux version.

[bulach, 2013/05/07 14:55:51]

good point! I mistakenly "un"defined HAVE_SYS_SYSCALL, and broke this. since
android does have sys/syscall, removed this here.

 #include "base/spinlock_linux-inl.h"
 #else
 #include "base/spinlock_posix-inl.h"