Update the tcmalloc vendor branch to r144 (gperftools 2.0).

third_party/tcmalloc/vendor/src/profiler.cc

Index: third_party/tcmalloc/vendor/src/profiler.cc
diff --git a/third_party/tcmalloc/vendor/src/profiler.cc b/third_party/tcmalloc/vendor/src/profiler.cc
index a57953efd526a006c516dffd2b01d43567760a78..dfb6aab52f4a9d7aa0e6e9c9a0a596c24e322efd 100644
--- a/third_party/tcmalloc/vendor/src/profiler.cc
+++ b/third_party/tcmalloc/vendor/src/profiler.cc
@@ -55,8 +55,8 @@ typedef int ucontext_t;   // just to quiet the compiler, mostly
 #endif
 #include <sys/time.h>
 #include <string>
-#include <google/profiler.h>
-#include <google/stacktrace.h>
+#include <gperftools/profiler.h>
+#include <gperftools/stacktrace.h>
 #include "base/commandlineflags.h"
 #include "base/logging.h"
 #include "base/googleinit.h"
@@ -284,7 +284,7 @@ void CpuProfiler::prof_handler(int sig, siginfo_t*, void* signal_ucontext,
   }
 }
 
-#if !(defined(__CYGWIN__) || defined(__CYGWIN32__)) && !defined(__native_client__)
+#if !(defined(__CYGWIN__) || defined(__CYGWIN32__))
 
 extern "C" PERFTOOLS_DLL_DECL void ProfilerRegisterThread() {
   ProfileHandlerRegisterThread();
@@ -316,14 +316,12 @@ extern "C" PERFTOOLS_DLL_DECL void ProfilerGetCurrentState(
   CpuProfiler::instance_.GetCurrentState(state);
 }
 
-#else  // !defined(OS_CYGWIN) && !defined(__native_client__)
+#else  // OS_CYGWIN
 
 // ITIMER_PROF doesn't work under cygwin.  ITIMER_REAL is available, but doesn't
 // work as well for profiling, and also interferes with alarm().  Because of
 // these issues, unless a specific need is identified, profiler support is
 // disabled under Cygwin.
-//
-// Native Client runtime also does not have signals working.
 extern "C" void ProfilerRegisterThread() { }
 extern "C" void ProfilerFlush() { }
 extern "C" int ProfilingIsEnabledForAllThreads() { return 0; }
@@ -337,7 +335,7 @@ extern "C" void ProfilerGetCurrentState(ProfilerState* state) {
   memset(state, 0, sizeof(*state));
 }
 
-#endif  // !defined(OS_CYGWIN) && !defined(__native_client__)
+#endif  // OS_CYGWIN
 
 // DEPRECATED routines
 extern "C" PERFTOOLS_DLL_DECL void ProfilerEnable() { }