This is failing gpu_unittests on Mac:

ShaderTranslatorTest.BuiltInFunctionEmulation:
../../gpu/command_buffer/service/shader_translator_unittest.cc:314: Failure
Value of: strstr(translated_source.c_str(), "webgl_dot_emu") != NULL
Actual: false
Expected: true

Reverting until we can fix the overly-narrow test.

BUG=angleproject:913

This reverts commit b50788d1.

Change-Id: I5bd9df83704e771e419339745eceaa43a20bd1e6
Reviewed-on: https://chromium-review.googlesource.com/275320Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>