tcmalloc: Only include cpu profiler in profiling=1 builds.

tcmalloc's cpu profiler code introduces several static initializers, and it's never
used on user machines.  So only include it in profiling=1 builds.
(The comment for profiling% in build/common.gypi even says that this
flag controls if cpuprofiler is used.)

BUG=94925
R=willchan@chromium.org

Review URL: https://codereview.chromium.org/287333002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271321 0039d316-1c4b-4281-b951-d872f2087c98

base/allocator/allocator.gyp

@@ -367,7 +367,10 @@
 
             # included by allocator_shim.cc
             'debugallocation_shim.cc',
-
+          ],
+        }],
+        ['OS=="win" or profiling!=1', {
+          'sources!': [
             # cpuprofiler
             '<(tcmalloc_dir)/src/base/thread_lister.c',
             '<(tcmalloc_dir)/src/base/thread_lister.h',