Per https://code.google.com/p/chromium/issues/detail?id=427065 and modeled after https://www.opengl.org/registry/specs/KHR/robust_buffer_access_behavior.txt , relax the bounds checking requirements on array accesses.  This should allow D3D to avoid unnecessary bounds checks.
Generalize the possible scenarios to KHR_robust_buffer_access_behavior's semantics.
Snapshotted WebGL 1.0.3 conformance suite per discussion in working group.
Merge pull request #783 from kenrussell/1.0.3-tests

Snapshotted WebGL 1.0.3 conformance suite per discussion in working grou...
Loosen fragment shader tolerance in glsl function tests from 0 to 1

Running the tests with precision emulation enabled revealed slight
differences in results from built-in functions compared to their emulated
counterparts. It is possible that these differences reproduce also on
spec-compliant hardware if a built-in function is compiled to different
assembly instructions with higher internal precision than its emulated
counterpart, for example. Because of this, tolerances for GLSL function
tests need to be loosened for calculations done in mediump.

This change is backported to previous versions of the conformance suite.
Merge pull request #784 from NVIDIA/fix-glsl-function-test-tolerance

Loosen fragment shader tolerance in glsl function tests from 0 to 1
Remove compound assignment restrictions from WEBGL_debug_shader_precision

It is possible to fully emulate precision for compound assignment by
replacing compound assignments with calls to the following kind of a
function:

float webgl_compound_add(inout float x, in float y) {
    x = round_float(x + y);
    return x;
}
Added error handling to XHR in loadTextFileAsync, and corrected comments
Merge pull request #785 from NVIDIA/remove-precision-emulation-limitations

Remove compound assignment restrictions from WEBGL_debug_shader_precision
Merge pull request #786 from shannonwoods/master

Added error handling to XHR in loadTextFileAsync, and corrected comments
Merge pull request #769 from imvu/master

Relax bounds checking requirements on array accesses