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Revert 150135 - Enable memory profiler on Linux when TC_MALLOC is enabled.

Added a tc_malloc memory extension to get bytes allocated on
current thread (GetBytesAllocatedOnCurrentThread API call).

R=jam@chromium.org,jar@chromium.org
BUG=139667
TEST=test about:profiler after setting the env variable 
     CHROME_PROFILER_TIME=1. In about:profiler, it will
     show the memory allocated per thread. This change
     impacts linux only.

Review URL: https://chromiumcodereview.appspot.com/10820063

TBR=rtenneti@chromium.org
Review URL: https://chromiumcodereview.appspot.com/10855010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@150142 0039d316-1c4b-4281-b951-d872f2087c98