Rolling 2 dependencies

Roll third_party/glslang/ 3ed344dd7..b0ada8035 (1 commit)

https://chromium.googlesource.com/external/github.com/KhronosGroup/glslang/+log/3ed344dd784e..b0ada80356ca

$ git log 3ed344dd7..b0ada8035 --date=short --no-merges --format='%ad %ae %s'
2020-01-17 cepheus HLSL: Fix #1974: ignore input primitives on non-entry-point functions.

Roll third_party/shaderc/ f53792645..c6a2ef12d (1 commit)

https://chromium.googlesource.com/external/github.com/google/shaderc/+log/f53792645f06..c6a2ef12dffc

$ git log f53792645..c6a2ef12d --date=short --no-merges --format='%ad %ae %s'
2020-01-17 rharrison Change call in shaderc_spvc_needs_buffer_size_buffer to be correct (#964)

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

Change-Id: I64dd2b710241452f568952e93545b24936202c11
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/15300
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
diff --git a/DEPS b/DEPS
index 08d9677..befab40 100644
--- a/DEPS
+++ b/DEPS
@@ -65,11 +65,11 @@
     'condition': 'dawn_standalone',
   },
   'third_party/glslang': {
-    'url': '{chromium_git}/external/github.com/KhronosGroup/glslang@3ed344dd784ecbbc5855e613786f3a1238823e56',
+    'url': '{chromium_git}/external/github.com/KhronosGroup/glslang@b0ada80356ca7b560c600b93a596af1331442542',
     'condition': 'dawn_standalone',
   },
   'third_party/shaderc': {
-    'url': '{chromium_git}/external/github.com/google/shaderc@f53792645f0696b8954cfdb3c213f96799dd89b2',
+    'url': '{chromium_git}/external/github.com/google/shaderc@c6a2ef12dffcd0c13f4d8c90b1a2f23ccda7931a',
     'condition': 'dawn_standalone',
   },