UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.84 Safari/537.36

Steps to reproduce the problem:
1. Try to get a WebGL 2 context
2. The returned context is null
3. chrome://gpu -> ContextGroup::Initialize failed because maximum vertex output components is too small (56, should be 64).

What is the expected behavior?
Get a valid WebGL 2 Context

What went wrong?
The GL_MAX_VERTEX_OUTPUT_COMPONENTS query in context_group.cc returns a strange value of "56" instead of the real "64" vertex output components.

Did this work before? Yes I think the last version it did work was Chrome Stable 49 or 50

Chrome version: 51.0.2704.84  Channel: stable
OS Version: 10.0
Flash Version: Shockwave Flash 21.0 r0

The GPU Caps Viewer returns the real value of "64" for the GL_MAX_VERTEX_OUTPUT_COMPONENTS query.