Roll WebGL 1db74f6..4e6c509

https://chromium.googlesource.com/external/khronosgroup/webgl.git/+log/1db74f6..4e6c509

BUG=655836

TEST=bots

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2416783007
Cr-Commit-Position: refs/heads/master@{#425541}

DEPS

@@ -186,7 +186,7 @@ deps = {
     Var('chromium_git') + '/external/bidichecker/lib.git' + '@' + '97f2aa645b74c28c57eca56992235c79850fa9e0',
 
   'src/third_party/webgl/src':
-    Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '1db74f63016a90bc696e050712a2bd515eae49fc',
+    Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '4e6c509',
 
   'src/third_party/webdriver/pylib':
     Var('chromium_git') + '/external/selenium/py.git' + '@' + '5fd78261a75fe08d27ca4835fb6c5ce4b42275bd',

content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

@@ -56,10 +56,34 @@ def SetExpectations(self):
 
     # All platforms.
     self.Flaky('conformance2/query/occlusion-query.html', bug=603168)
+    self.Fail('conformance/buffers/buffer-uninitialized.html',
+        bug=654201)
+    self.Fail('conformance2/transform_feedback/transform_feedback.html',
+        bug=654201)
+    self.Fail('conformance2/context/constants-and-properties-2.html',
+        bug=655836)
+    self.Fail('conformance/extensions/webgl-compressed-texture-etc.html',
+        bug=655836)
+    self.Fail('conformance/extensions/webgl-compressed-texture-pvrtc.html',
+        bug=655836)
+    self.Fail('conformance/extensions/webgl-compressed-texture-atc.html',
+        bug=655836)
+    self.Fail('conformance/extensions/webgl-compressed-texture-s3tc.html',
+        bug=655836)
+    self.Fail('conformance/extensions/webgl-compressed-texture-s3tc-srgb.html',
+        bug=655836)
+    self.Fail('conformance2/textures/misc/tex-storage-compressed-formats.html',
+        bug=655836)
+    self.Fail('deqp/functional/gles3/integerstatequery.html', bug=655836)
+    self.Fail('deqp/functional/gles3/negativetextureapi.html',
+        ['win', 'mac'], bug=655836)
+    self.Fail('deqp/functional/gles3/textureformat/*', bug=655836)
+    self.Fail('deqp/functional/gles3/texturewrap/*', bug=655836)
+    self.Fail('deqp/functional/gles3/texturewrap.html', bug=655836)
 
     # Windows only.
     # We are awesome!
-    self.Fail('conformance2/buffers/getBufferSubData.html',
+    self.Fail('conformance2/buffers/get-buffer-sub-data.html',
         ['win'], bug=654201)
 
     # Win / NVidia
@@ -504,7 +528,7 @@ def SetExpectations(self):
         ['mac', 'intel'], bug=483282)
 
     # Linux only.
-    self.Fail('conformance2/buffers/getBufferSubData.html',
+    self.Fail('conformance2/buffers/get-buffer-sub-data.html',
         ['linux'], bug=654201)
 
     self.Flaky('conformance/textures/video/' +

content/test/gpu/gpu_tests/webgl_conformance_expectations.py

@@ -112,6 +112,9 @@ def SetExpectations(self):
     # ========================
     # Fails on all platforms
 
+    self.Fail('conformance/buffers/buffer-uninitialized.html',
+        bug=654201)
+
     # We need to add WebGL 1 check in command buffer that format/type from
     # TexSubImage2D have to match the current texture's.
     self.Fail('conformance/textures/misc/tex-sub-image-2d-bad-args.html',