* stable-3.0:
CreateTag: Trim revision that is provided in input
CreateTag: Allow revision in input to be empty
RefUtil#parseBaseRevision: Do not log an error if baseRevision is invalid
InvalidRevisionException: Include invalid revision into message
CreateBranch: Trim revision that is provided in input
CreateBranch: Allow revision in input to be empty
CreateBranchIT: Add tests that set revision in the input
Upgrade gitiles blame-cache to 0.2-7.1
Change-Id: I8619bb502486fe97c3f1b12015cd41038915ba9c
7f4d86dcc1