Fix TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN query results.
Fix TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN query results.

They were being truncated to either 0 or 1. Explicitly handle
ANY_SAMPLES_PASSED, ANY_SAMPLES_PASSED_CONSERVATIVE, and
TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN BeginQuery targets.

BUG=526748

Review URL: https://codereview.chromium.org/1335393002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#348698}

ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend