Add GL_PROGRAM_COMPLETION_QUERY_CHROMIUM

This makes the query of GL_COMPLETION_STATUS_KHR to programs much
cheaper by minimizing the round-trip to the GPU thread.

Bug: 881152, 957001
Change-Id: Iadfa798af29225e752c710ca5c25f50b3dd3101a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1586630
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#657568}
ScopedTextureBinder::ScopedTextureBinder(ContextState* state,
                                         ErrorState* error_state,
                                         GLuint id,
                                         GLenum target)
    : state_(state), error_state_(error_state), target_(target) {
  ScopedGLErrorSuppressor suppressor("ScopedTextureBinder::ctor", error_state_);

  auto* api = state->api();
  api->glActiveTextureFn(GL_TEXTURE0);
  api->glBindTextureFn(target, id);
}

ScopedTextureBinder::ScopedTextureBinder(ContextState* state,
                                         ErrorState* error_state,
                                         GLuint id,
                                         GLenum target)
    : state_(state), error_state_(error_state), target_(target) {
  ScopedGLErrorSuppressor suppressor("ScopedTextureBinder::ctor", error_state_);

  auto* api = state->api();
  api->glActiveTextureFn(GL_TEXTURE0);
  api->glBindTextureFn(target, id);
}
