Update the tcmalloc chromium branch to r144 (gperftools 2.0), and merge chromium-specific changes.

third_party/tcmalloc/chromium/src/tests/low_level_alloc_unittest.cc

 /* Copyright (c) 2006, 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
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 // A test for low_level_alloc.cc
 
 #include <stdio.h>
 #include <map>
 #include "base/low_level_alloc.h"
 #include "base/logging.h"
-#include <google/malloc_hook.h>
+#include <gperftools/malloc_hook.h>
 
 using std::map;
 
 // a block of memory obtained from the allocator
 struct BlockDesc {
   char *ptr;      // pointer to memory
   int len;        // number of bytes
   int fill;       // filled with data starting with this
 };
 
@@ skipping 139 matching lines @@
     } else {
       CHECK_EQ(allocates, 0);    // arena doesn't call hooks
       CHECK_EQ(frees, 0);
     }
   }
   printf("\nPASS\n");
   CHECK(MallocHook::RemoveNewHook(&AllocHook));
   CHECK(MallocHook::RemoveDeleteHook(&FreeHook));
   return 0;
 }