Add sampler related ES3 APIs to command buffer.

Including:
  glGetSamplerParameter*v
  glSamplerParameter*v
  glSamplerParameteri/f
  glBindSampler
  glDeleteSamplers
  glGenSamplers
  glIsSampler

One major feature that I add is the client/service ID mapping handling.

BUG=429053
TEST=gpu_unittests
[email protected]

Review URL: https://codereview.chromium.org/788123002

Cr-Commit-Position: refs/heads/master@{#307810}
32 files changed