Make the profile buffer larger in third_party/tcmalloc/chromium.
Make the profile buffer larger in third_party/tcmalloc/chromium.

This patch is originally from http://codereview.chromium.org/7865021/. 


BUG=none
TEST=none


Review URL: http://codereview.chromium.org/8634005

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@115805 0039d316-1c4b-4281-b951-d872f2087c98

adobe/chromium,ropik/chromium,ropik/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,gavinp/chromium,gavinp/chromium,gavinp/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,ropik/chromium,yitian134/chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,gavinp/chromium,adobe/chromium,ropik/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,yitian134/chromium,ropik/chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,yitian134/chromium,gavinp/chromium,gavinp/chromium,adobe/chromium,ropik/chromium,adobe/chromium