[automerger skipped] Add TestNetworkTracker to test utils. am: bc5ce1bf am:...
[automerger skipped] Add TestNetworkTracker to test utils. am: bc5ce1bf am: 5e33a41c -s ours am: fb2d2cfe -s ours am: dc5d8351 -s ours
am skip reason: Change-Id I6f8d1e36670c46ebcbca01e0a64ce579bcdcc1f9 with SHA-1 b6045266 is in history
Change-Id: Iad5ebbafc89ae45b1047378853b3cd8470dd2aa1