Roll third_party/externals/angle2/ bc54342bf..dd196e0bc (14 commits)

https://chromium.googlesource.com/angle/angle.git/+log/bc54342bf6da..dd196e0bc0c4

$ git log bc54342bf..dd196e0bc --date=short --no-merges --format='%ad %ae %s'
2018-04-04 lucferron Vulkan: Implement color mask and depth mask bits
2018-04-04 oetuaho Identify functions by unique id in BuiltInFunctionEmulator
2018-03-31 jmadill Vulkan: Rename StreamingBuffer to DynamicBuffer.
2018-04-02 lfy GLES1: Add MatrixType packed enum to entry points
2018-03-30 courtneygo Fix Tokenizer issue
2018-04-04 oetuaho Disallow case statements nested in blocks
2018-03-29 lfy GLES1: glMultiTexCoord4(f|x)
2018-03-31 jmadill Vulkan: Move image layout into helper.
2018-04-04 lucferron Vulkan: Follow up change to optimize number of condition checks
2018-03-29 lucferron Vulkan: Implement stencil test support
2018-03-29 lucferron Vulkan: Depth/stencil scissored clears
2018-03-31 jmadill Vulkan: Use DrawCallParams in draw methods.
2018-04-04 jmadill Move Buffer Subject/Observer to front end.
2018-04-03 oetuaho Validate gl_FragData and gl_FragColor access after parsing

Created with:
  roll-dep third_party/externals/angle2


The AutoRoll server is located here: https://angle-skia-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


CQ_INCLUDE_TRYBOTS=skia.primary:Build-Debian9-Clang-x86_64-Release-ANGLE;skia.primary:Perf-Win10-Clang-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-All-ANGLE;skia.primary:Perf-Win10-Clang-NUC5i7RYH-GPU-IntelIris6100-x86_64-Debug-All-ANGLE;skia.primary:Perf-Win10-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-All-ANGLE;skia.primary:Perf-Win10-Clang-NUCD34010WYKH-GPU-IntelHD4400-x86_64-Debug-All-ANGLE;skia.primary:Perf-Win10-Clang-ShuttleC-GPU-GTX960-x86_64-Debug-All-ANGLE;skia.primary:Test-Win10-Clang-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-All-ANGLE;skia.primary:Test-Win10-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-All-ANGLE;skia.primary:Test-Win10-Clang-NUCD34010WYKH-GPU-IntelHD4400-x86_64-Debug-All-ANGLE;skia.primary:Test-Win10-Clang-ShuttleC-GPU-GTX960-x86_64-Debug-All-ANGLE
TBR=herb@google.com

Change-Id: I0a836d1df056233b0201427633eabdd0d163c87e
Reviewed-on: https://skia-review.googlesource.com/118900
Reviewed-by: <angle-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: <angle-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index a6c41ea..412cdea 100644
--- a/DEPS
+++ b/DEPS
@@ -3,7 +3,7 @@
 deps = {
   "buildtools"                          : "https://chromium.googlesource.com/chromium/buildtools.git@505de88083136eefd056e5ee4ca0f01fe9b33de8",
   "common"                              : "https://skia.googlesource.com/common.git@9737551d7a52c3db3262db5856e6bcd62c462b92",
-  "third_party/externals/angle2"        : "https://chromium.googlesource.com/angle/angle.git@bc54342bf6da40575b1bedf5935aaf24c3f40d71",
+  "third_party/externals/angle2"        : "https://chromium.googlesource.com/angle/angle.git@dd196e0bc0c4d291c09a4f48e7b7da3cc53eeecf",
   "third_party/externals/dng_sdk"       : "https://android.googlesource.com/platform/external/dng_sdk.git@96443b262250c390b0caefbf3eed8463ba35ecae",
   "third_party/externals/expat"         : "https://android.googlesource.com/platform/external/expat.git@android-6.0.1_r55",
   "third_party/externals/freetype"      : "https://skia.googlesource.com/third_party/freetype2.git@fa6da7bf6dcbcfa22d2464259ad1cccee3233189",