Update WebGL expectations after roll.

Disables breaking tests on Mac and Windows 7.

TBR=kbr@chromium.org

Bug: 786716, 786717
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I7b547ea97bf357fcce0da4d0e0ff949a78f9565c
Reviewed-on: https://chromium-review.googlesource.com/778280
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517717}

content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

@@ -172,6 +172,9 @@ class WebGL2ConformanceExpectations(WebGLConformanceExpectations):
     self.Fail('conformance2/textures/canvas_sub_rectangle/' +
         'tex-2d-r8-red-unsigned_byte.html',
         ['win', 'nvidia', 'opengl'], bug=784849)
+    self.Fail('conformance2/textures/canvas_sub_rectangle/' +
+        'tex-2d-r16f-red-float.html',
+        ['win', 'nvidia', 'opengl'], bug=786716)
 
     # Win / AMD
     self.Fail('conformance2/rendering/blitframebuffer-stencil-only.html',
@@ -389,6 +392,10 @@ class WebGL2ConformanceExpectations(WebGLConformanceExpectations):
     self.Flaky('conformance2/textures/image_bitmap_from_video/' +
         'tex-2d-rgba16f-rgba-half_float.html',
         ['mac', ('nvidia', 0xfe9)], bug=682834)
+    self.Fail('conformance/canvas/render-after-resize-test.html',
+        ['mac', ('nvidia', 0xfe9)], bug=786717)
+    self.Fail('conformance/glsl/bugs/init-array-with-loop.html',
+        ['mac', ('nvidia', 0xfe9)], bug=786717)
 
     self.Fail('deqp/functional/gles3/draw/random.html',
         ['sierra', ('nvidia', 0xfe9)], bug=716652)

content/test/gpu/gpu_tests/webgl_conformance_expectations.py

@@ -462,6 +462,10 @@ class WebGLConformanceExpectations(GpuTestExpectations):
         ['mac', ('nvidia', 0xfe9)], bug=635081)
     self.Fail('conformance/canvas/drawingbuffer-static-canvas-test.html',
         ['highsierra', ('nvidia', 0xfe9)], bug=775202)
+    self.Fail('conformance/canvas/render-after-resize-test.html',
+        ['mac', ('nvidia', 0xfe9)], bug=786717)
+    self.Fail('conformance/glsl/bugs/init-array-with-loop.html',
+        ['mac', ('nvidia', 0xfe9)], bug=786717)
 
     # Linux failures
     self.Fail('conformance/extensions/webgl-compressed-texture-astc.html',