Update GitBranchPoller to use a remote name when referring to the user-specified branches
Update GitBranchPoller to use a remote name when referring to the user-specified branches

BUG=40126

Review URL: https://codereview.chromium.org/447043002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@287857 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build