Include base/stringprintf.h in base/debug/profiler.cc.
Include base/stringprintf.h in base/debug/profiler.cc.

This is needed after r97067.

BUG=none
TEST=building with GYP_DEFINES="profiling=1" works
TBR=tfarina

Review URL: http://codereview.chromium.org/7624014

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@97128 0039d316-1c4b-4281-b951-d872f2087c98

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