Rolling 4 dependencies

Roll third_party/SPIRV-Tools/ 958f7e72a..9eb1c9a4c (20 commits)

958f7e72a7..9eb1c9a4c4

$ git log 958f7e72a..9eb1c9a4c --date=short --no-merges --format='%ad %ae %s'
2019-10-01 stevenperron Add continue construct analysis to struct cfg analysis (#2922)
2019-09-27 stevenperron Record trailing line dbg instructions (#2926)
2019-09-27 rharrison Add removing references to debug instructions when removing them (#2923)
2019-09-27 paulthomson spirv-fuzz: allow interestingness script arguments (#2925)
2019-09-27 ehsannas Add Kokoro bots for building with Bazel. (#2914)
2019-09-27 alanbaker Refactor the InstructionPass (#2924)
2019-09-26 afdx spirv-fuzz: do not allow a dead break to target an unreachable block (#2917)
2019-09-26 afdx spirv-fuzz: preserve some analyses when permuting blocks (#2918)
2019-09-25 alanbaker Only allow previously declared forward refs in structs (#2920)
2019-09-25 stevenperron Handle id overflow in wrap-opkill (#2916)
2019-09-25 afdx spirv-fuzz: do not replace struct indices with synonyms (#2915)
2019-09-25 afdx spirv-fuzz: Fixes to preconditions for adding dead break/continue edges (#2904)
2019-09-25 afdx spirv-fuzz: do not replace a pointer argument to a function call with a synonym (#2901)
2019-09-25 afdx spirv-fuzz: do not replace boolean constant argument to OpPhi instruction (#2903)
2019-09-24 alanbaker Remove validate_datarules.cpp (#2911)
2019-09-24 stevenperron Handle extract with no indexes (#2910)
2019-09-24 ehsannas Add Bazel build configuration. (#2891)
2019-09-24 stevenperron Handle id overflow in convert local access chains (#2908)
2019-09-24 dsinclair Add OpCopyMemory test to SVA. (#2885)
2019-09-23 dsinclair Add missing GN dependency (#2899)

Roll third_party/glslang/ 973d0e538..7bc047326 (1 commit)

973d0e5382..7bc047326e

$ git log 973d0e538..7bc047326 --date=short --no-merges --format='%ad %ae %s'
2019-09-18 laddoc Reflection will crash when the VS input symbol defines the same name with FS output symbol

Roll third_party/shaderc/ cb8b3fc5c..e849e6783 (4 commits)

cb8b3fc5ca..e849e6783d

$ git log cb8b3fc5c..e849e6783 --date=short --no-merges --format='%ad %ae %s'
2019-09-23 rharrison Add logging missing failures to spvc test script (#815)
2019-09-23 rharrison Add --update_known_failures to spvc test script (#813)
2019-09-23 rharrison Another round of cleaning the spvc test script (#811)
2019-09-23 rharrison Rolling 2 dependencies (#812)

Roll third_party/spirv-headers/ 601d73872..842ec9067 (4 commits)

601d738723..842ec90674

$ git log 601d73872..842ec9067 --date=short --no-merges --format='%ad %ae %s'
2019-09-24 ehsannas Improve the doc on using Bazel.
2019-09-24 rex.xu Bump the SPIR-V version to 1.5
2019-09-23 ehsannas Update documentation.
2019-09-18 ehsannas Add a Bazel build file.

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

Change-Id: If888854a1b123b01cd14169d9e2ac0cf2b0eec00
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/11741
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>

DEPS

@@ -56,19 +56,19 @@ deps = {
 
   # SPIRV compiler dependencies: SPIRV-Tools, SPIRV-headers, glslang and shaderc
   'third_party/SPIRV-Tools': {
-    'url': '{chromium_git}/external/github.com/KhronosGroup/SPIRV-Tools@958f7e72a7a9fcb27568763196000994b6d07252',
+    'url': '{chromium_git}/external/github.com/KhronosGroup/SPIRV-Tools@9eb1c9a4c45099c23098d97c5a6a8b35a45a8f25',
     'condition': 'dawn_standalone',
   },
   'third_party/spirv-headers': {
-    'url': '{chromium_git}/external/github.com/KhronosGroup/SPIRV-Headers@601d738723ac381741311c6c98c36d6170be14a2',
+    'url': '{chromium_git}/external/github.com/KhronosGroup/SPIRV-Headers@842ec90674627ed2ffef609e3cd79d1562eded01',
     'condition': 'dawn_standalone',
   },
   'third_party/glslang': {
-    'url': '{chromium_git}/external/github.com/KhronosGroup/glslang@973d0e538292c85b7baf9bb5aaf755894429f76a',
+    'url': '{chromium_git}/external/github.com/KhronosGroup/glslang@7bc047326e06961c59b785f827026947d81c7f02',
     'condition': 'dawn_standalone',
   },
   'third_party/shaderc': {
-    'url': '{chromium_git}/external/github.com/google/shaderc@cb8b3fc5caf99c54fba88ac3c0a45ed6e50c0f43',
+    'url': '{chromium_git}/external/github.com/google/shaderc@e849e6783d9f99fd7727d12f0cf2321269beca17',
     'condition': 'dawn_standalone',
   },