Merge tcmalloc r111 (perftools v. 1.8) with the chromium/ branch.

third_party/tcmalloc/chromium/src/tests/malloc_extension_c_test.c

 /* Copyright (c) 2009, 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 108 matching lines @@
   MallocExtension_MarkThreadIdle();
   MallocExtension_MarkThreadBusy();
   MallocExtension_ReleaseToSystem(1);
   MallocExtension_ReleaseFreeMemory();
   if (MallocExtension_GetEstimatedAllocatedSize(10) < 10) {
     FAIL("GetEstimatedAllocatedSize returned a bad value (too small)");
   }
   if (MallocExtension_GetAllocatedSize(x) < 10) {
     FAIL("GetEstimatedAllocatedSize returned a bad value (too small)");
   }
+  if (MallocExtension_GetOwnership(x) != MallocExtension_kOwned) {
+    FAIL("DidAllocatePtr returned a bad value (kNotOwned)");
+  }
+  /* TODO(csilvers): this relies on undocumented behavior that
+     GetOwnership works on stack-allocated variables.  Use a better test. */
+  if (MallocExtension_GetOwnership(hist) != MallocExtension_kNotOwned) {
+    FAIL("DidAllocatePtr returned a bad value (kOwned)");
+  }
 
   free(x);
 }
 
 int main(int argc, char** argv) {
   TestMallocHook();
   TestMallocExtension();
 
   printf("PASS\n");
   return 0;
 }