Revert of Roll WebGL conformance tests. (patchset #4 id:250001 of...

Revert of Roll WebGL conformance tests. (patchset #4 id:250001 of https://codereview.chromium.org/641173002/)

Reason for revert:
might cause a bunch of texture related tests to timeout

conformance_textures_texture_formats_test
conformance_textures_texture_hd_dpi
conformance_textures_texture_mips
conformance_textures_texture_npot
conformance_textures_texture_npot_video
conformance_textures_texture_size
conformance_textures_texture_size_cube_maps
conformance_textures_texture_size_limit
conformance_textures_texture_sub_image_cube_maps
conformance_textures_texture_transparent_pixels_initialized
conformance_textures_texture_upload_cube_maps

Original issue's description:
> Roll WebGL conformance tests.
>
> BUG=401311,421705
> TEST=gpu bots
> NOTRY=true
> R=kbr@chromium.org
>
> Committed: https://crrev.com/84d03b89afa3baade276d0f7ac7892ab77ed8d21
> Cr-Commit-Position: refs/heads/master@{#299134}

TBR=kbr@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=401311,421705

Review URL: https://codereview.chromium.org/648833003

Cr-Commit-Position: refs/heads/master@{#299166}

DEPS

@@ -208,7 +208,7 @@ deps = {
     Var('chromium_git') + '/external/bidichecker/lib.git' + '@' + '97f2aa645b74c28c57eca56992235c79850fa9e0',
 
   'src/third_party/webgl/src':
-   Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '34ac01c7aae98e74fbe14a6eb73297babb17c443',
+   Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + 'b1a7210dc4034793e34a2149cb571e85700a85f2',
 
   'src/third_party/swig/Lib':
    Var('chromium_git') + '/chromium/deps/swig/Lib.git' + '@' + 'f2a695d52e61e6a8d967731434f165ed400f0d69',

content/test/gpu/gpu_tests/webgl_conformance_expectations.py

@@ -25,16 +25,8 @@ class WebGLConformanceExpectations(test_expectations.TestExpectations):
     #     ['mac', 'amd', ('nvidia', 0x1234)], bug=123)
 
     # Fails on all platforms
-    self.Fail('conformance/glsl/misc/shaders-with-invariance.html',
-        bug=421710)
-    self.Fail('conformance/glsl/misc/struct-unary-operators.html',
-        bug=421709)
-    self.Fail('conformance/renderbuffers/feedback-loop.html',
-        bug=421695)
-    self.Fail('conformance/textures/texture-copying-feedback-loops.html',
-        bug=421695)
-    self.Fail('conformance/textures/tex-image-and-sub-image-2d-with-webgl-canvas.html',
-        bug=420357)
+    self.Fail('conformance/glsl/misc/shaders-with-uniform-structs.html',
+        bug=351396)
 
     # Flaky on Win
     self.Fail('conformance/extensions/webgl-draw-buffers.html',
@@ -47,19 +39,6 @@ class WebGLConformanceExpectations(test_expectations.TestExpectations):
         ['win'], bug=402195)
     self.Fail('conformance/attribs/gl-bindAttribLocation-matrix.html',
         ['win'], bug=415688)
-    self.Fail('conformance/attribs/gl-bindAttribLocation-aliasing.html',
-        ['win'], bug=415688)
-    self.Fail('conformance/textures/tex-image-and-sub-image-2d-with-webgl-canvas-rgb565.html',
-        ['win'], bug=420357)
-    self.Fail('conformance/textures/tex-image-and-sub-image-2d-with-webgl-canvas-rgba4444.html',
-        ['win'], bug=420357)
-    self.Fail('conformance/textures/tex-image-and-sub-image-2d-with-webgl-canvas-rgba5551.html',
-        ['win'], bug=420357)
-    self.Fail('conformance/glsl/misc/ternary-operators-in-global-initializers.html',
-        ['win'], bug=415694)
-    self.Fail('conformance/glsl/misc/ternary-operators-in-initializers.html',
-        ['win'], bug=415694)
-
 
     # Win7 / Intel failures
     self.Fail('conformance/rendering/gl-scissor-test.html',
@@ -151,10 +130,6 @@ class WebGLConformanceExpectations(test_expectations.TestExpectations):
     self.Fail('conformance/extensions/webgl-compressed-texture-size-limit.html',
         ['lion', 'intel'], bug=393331)
 
-    # Linux failures
-    self.Fail('conformance/textures/default-texture.html',
-        ['linux', ('nvidia', 0x104a)], bug=422152)
-
     # Android failures
     # The following test is very slow and therefore times out on Android bot.
     self.Skip('conformance/rendering/multisample-corruption.html',