Merge "Atrace:use ReadFileToString to read file" am: 3cebac7
am: ab682e4

* commit 'ab682e471572d11c5aa217c9cdd5e2c5f3716598':
  Atrace:use ReadFileToString to read file

Change-Id: If2ee9e48032ac71f843a4a24d9cc012587bace79