Revert 126020 - Experiment for updating the tcmalloc chromium branch to r144 (gperftools 2.0).

third_party/tcmalloc/chromium/src/stacktrace_config.h

Index: third_party/tcmalloc/chromium/src/stacktrace_config.h
===================================================================
--- third_party/tcmalloc/chromium/src/stacktrace_config.h	(revision 126022)
+++ third_party/tcmalloc/chromium/src/stacktrace_config.h	(working copy)
@@ -68,14 +68,6 @@
 #   define STACKTRACE_INL_HEADER "stacktrace_generic-inl.h"
 # endif
 
-// The ARM case
-#elif defined(__arm__)  && __GNUC__ >= 2
-# if !defined(NO_FRAME_POINTER)
-#   define STACKTRACE_INL_HEADER "stacktrace_arm-inl.h"
-# else
-#   error stacktrace without frame pointer is not supported on ARM
-# endif
-
 // The Windows case -- probably cygwin and mingw will use one of the
 // x86-includes above, but if not, we can fall back to windows intrinsics.
 #elif defined(_WIN32) || defined(__CYGWIN__) || defined(__CYGWIN32__) || defined(__MINGW32__)