Also updated known_failures

Roll third_party/glslang/ 3cea2e5..37fc4d2 (4 commits)

KhronosGroup/glslang@3cea2e5...37fc4d2

$ git log 3cea2e5..37fc4d2 --date=short --no-merges --format='%ad %ae %s'
2019-08-09 rharrison Make non-emscripten flags platform agnostic.
2019-08-09 rharrison Converted ENABLE_HLSL to a dependent option, so it can be always disabled in web builds
2019-08-09 rharrison Move build instructions to README.md
2019-08-08 rharrison Add WASM build target for Web version of glslang

Roll third_party/googletest/ b4961ab1c..90a443f9c (6 commits)

google/googletest@b4961ab...90a443f

$ git log b4961ab1c..90a443f9c --date=short --no-merges --format='%ad %ae %s'
2019-08-07 absl-team Googletest export
2019-08-07 absl-team Googletest export
2019-08-07 krystian.kuzniarek fix an improperly generated table
2019-08-06 krystian.kuzniarek fix broken links
2019-08-06 antoine Fix KhronosGroup#2371: Redirect Windows CRT assertions to stderr
2019-08-01 krystian.kuzniarek remove an excessive mutable type specifier

Roll third_party/spirv-tools/ 698b56a..f701237 (9 commits)

KhronosGroup/SPIRV-Tools@698b56a...f701237

$ git log 698b56a..f701237 --date=short --no-merges --format='%ad %ae %s'
2019-08-12 stevenperron Remove useless semi-colons (KhronosGroup#2789)
2019-08-09 greg Instrument: Fix version 2 output record write for tess eval shaders. (KhronosGroup#2782)
2019-08-08 stevenperron Start SPIRV-Tools v2019.5
2019-08-08 stevenperron Finalize SPIRV-Tools v2019.4
2019-08-08 stevenperron Add descriptor array scalar replacement (KhronosGroup#2742)
2019-08-08 stevenperron Update CHANGES
2019-08-08 greg Add SPV_EXT_physical_storage_buffer to opt whitelists (KhronosGroup#2779)
2019-08-07 stevenperron Handle RelaxedPrecision in SROA (KhronosGroup#2788)
2019-08-07 zoddicus Add -fextra-semi to Clang builds (KhronosGroup#2787)

Created with:
  roll-dep third_party/effcee third_party/glslang third_party/googletest third_party/re2 third_party/spirv-cross third_party/spirv-headers third_party/spirv-tools