Rolling 4 dependencies

Roll third_party/SPIRV-Tools/ 1b3441036..a9624b4d5 (8 commits)

1b3441036a..a9624b4d5d

$ git log 1b3441036..a9624b4d5 --date=short --no-merges --format='%ad %ae %s'
2020-02-03 dnovillo Handle TimeAMD in AmdExtensionToKhrPass. (#3168)
2020-02-03 stevenperron Update CHANGES
2020-02-03 arseny.kapoulkine Implement constant folding for many transcendentals (#3166)
2020-01-30 afdx Fix typo in comment. (#3163)
2020-01-30 afdx spirv-fuzz: Arbitrary variable facts (#3165)
2020-01-29 afdx spirv-fuzz: Add outlining test (#3164)
2020-01-29 afdx spirv-fuzz: Make functions "livesafe" during donation (#3146)
2020-01-28 stevenperron Dead branch elim fix (#3160)

Roll third_party/glslang/ 07a55839e..5e86b28ff (2 commits)

07a55839ee..5e86b28ffb

$ git log 07a55839e..5e86b28ff --date=short --no-merges --format='%ad %ae %s'
2020-01-29 jbolz Use NOT ... VERSION_LESS instead of VERSION_GREATER_EQUAL
2020-01-28 jordan.l.justen standalone: Fix --help

Roll third_party/shaderc/ 0681dd61d..6d9f753c1 (5 commits)

0681dd61d3..6d9f753c1d

$ git log 0681dd61d..6d9f753c1 --date=short --no-merges --format='%ad %ae %s'
2020-01-30 rharrison Add documentation for Vulkan 1.2 and SPIR-V 1.5 (#980)
2020-01-30 dneto Better help for glslc -S (#978)
2020-01-29 rharrison Add back in deprecated APIs (#977)
2020-01-28 kainino1 Make a source_set for libshaderc_spvc (#976)
2020-01-27 rharrison Rolling 5 dependencies and updating expectations (#975)

Roll third_party/spirv-cross/ 68bf0f824..6b2add8e2 (4 commits)

68bf0f824c..6b2add8e2c

$ git log 68bf0f824..6b2add8e2 --date=short --no-merges --format='%ad %ae %s'
2020-02-03 post Use GNUInstallDirs for include path as well.
2020-02-01 orbea cmake: Don't hardcode the pkg-config file.
2020-02-01 orbea cmake: Use GNUInstallDirs.
2020-02-01 post CMake: Avoid warning when parent project uses VERSION in project().

Created with:
  roll-dep third_party/SPIRV-Tools third_party/glslang third_party/shaderc third_party/spirv-cross third_party/spirv-headers

Change-Id: If0ccbe8201ad572ce0bf8e29bb5520d995182645
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/15700
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>

DEPS

@@ -51,13 +51,13 @@ deps = {
 
   # SPIRV-Cross
   'third_party/spirv-cross': {
-    'url': '{chromium_git}/external/github.com/KhronosGroup/SPIRV-Cross@68bf0f824cc9d4fa9e0844b8ecdc5fc271fa6b7a',
+    'url': '{chromium_git}/external/github.com/KhronosGroup/SPIRV-Cross@6b2add8e2cdd2fcc3a94214775c35422881f9d13',
     'condition': 'dawn_standalone',
   },
 
   # SPIRV compiler dependencies: SPIRV-Tools, SPIRV-headers, glslang and shaderc
   'third_party/SPIRV-Tools': {
-    'url': '{chromium_git}/external/github.com/KhronosGroup/SPIRV-Tools@1b3441036a8f178cb3b41c1aa222b652db522a88',
+    'url': '{chromium_git}/external/github.com/KhronosGroup/SPIRV-Tools@a9624b4d5d0bb1617d6e20dbaba174b07cee18ee',
     'condition': 'dawn_standalone',
   },
   'third_party/spirv-headers': {
@@ -65,11 +65,11 @@ deps = {
     'condition': 'dawn_standalone',
   },
   'third_party/glslang': {
-    'url': '{chromium_git}/external/github.com/KhronosGroup/glslang@07a55839eed550d84ef62e0c7f503e0d67692708',
+    'url': '{chromium_git}/external/github.com/KhronosGroup/glslang@5e86b28ffb8124a5ee2a58c640245ee5b285110d',
     'condition': 'dawn_standalone',
   },
   'third_party/shaderc': {
-    'url': '{chromium_git}/external/github.com/google/shaderc@0681dd61d3b0eaf9f99aa066f8d1d9a834be6d72',
+    'url': '{chromium_git}/external/github.com/google/shaderc@6d9f753c1d15adbf711571410b2b14dc20ec6ac1',
     'condition': 'dawn_standalone',
   },