Add isolate.py trace --merge to do a trace and merge in a single command.

TBR=csharp@chromium.org
NOTRY=true
BUG=


Review URL: https://chromiumcodereview.appspot.com/10908113

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@155228 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed