Cleanup Mesa-related webgl test expectations

These tests were all caused by bugs in Mesa which were fixed, but the
tests were still suppressed until the bots were updated to a later Mesa
version. All the bots are now updated and the tests pass.

Bug: 666384
Bug: 680675
Bug: 844349
Bug: 905011
Change-Id: Ic371d2fdaf36a6ebd184ee36b78b90dacd6dfcd9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1863375Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>
Cr-Commit-Position: refs/heads/master@{#706437}

content/test/gpu/gpu_tests/gpu_helper.py

@@ -10,8 +10,6 @@ import mock
 EXPECTATIONS_DRIVER_TAGS = frozenset([
     'angle_lt_25.20.100.6444',
     'angle_lt_25.20.100.6577',
-    'mesa_lt_17.1.6',
-    'mesa_lt_17.3.9',
     'mesa_lt_19.1.2'
 ])
 

content/test/gpu/gpu_tests/test_expectations/webgl2_conformance_expectations.txt

@@ -6,7 +6,7 @@
 #         nvidia nvidia-0xf02 nvidia-0xfe9 nvidia-0x1cb3
 #         qualcomm qualcomm-adreno-(tm)-540 ]
 # tags: [ debug ]
-# tags: [ angle_lt_25.20.100.6444 angle_lt_25.20.100.6577 mesa_lt_17.1.6 mesa_lt_17.3.9 mesa_lt_19.1.2 ]
+# tags: [ angle_lt_25.20.100.6444 angle_lt_25.20.100.6577 mesa_lt_19.1.2 ]
 # results: [ Failure RetryOnFailure Skip ]
 
 
@@ -256,7 +256,6 @@ crbug.com/angleproject/3354 [ win amd-0x699f ] deqp/functional/gles3/fborender/s
 crbug.com/989050 [ d3d11 win7 amd ] conformance2/textures/misc/tex-unpack-params-imagedata.html [ RetryOnFailure ]
 
 # Passthrough command decoder
-crbug.com/844349 [ passthrough ] conformance/misc/webgl-specific-stencil-settings.html [ Failure ]
 crbug.com/951628 [ passthrough ] conformance/rendering/blending.html [ Failure ]
 crbug.com/953120 [ passthrough ] conformance/programs/program-test.html [ Failure ]
 
@@ -586,13 +585,8 @@ crbug.com/982294 [ mac passthrough ] deqp/functional/gles3/transformfeedback/ran
 
 # Intel failed issues
 crbug.com/950552 [ linux intel ] conformance2/textures/misc/tex-3d-size-limit.html [ Failure ]
-crbug.com/905011 [ linux intel opengl passthrough ] conformance2/textures/misc/tex-subimage3d-pixel-buffer-bug.html [ Failure ]
 
 # Intel driver issues
-crbug.com/680675 [ linux intel mesa_lt_17.1.6 ] conformance/extensions/webgl-compressed-texture-astc.html [ Failure ]
-crbug.com/905011 [ linux intel no-angle mesa_lt_17.3.9 ] conformance2/textures/misc/tex-subimage3d-pixel-buffer-bug.html [ Failure ]
-crbug.com/666384 [ linux intel no-angle mesa_lt_17.3.9 ] deqp/functional/gles3/shadertexturefunction/texturesize.html [ Failure ]
-crbug.com/666384 [ linux intel no-angle mesa_lt_17.3.9 ] conformance2/textures/misc/tex-3d-mipmap-levels-intel-bug.html [ Failure ]
 crbug.com/950552 [ linux intel mesa_lt_19.1.2 ] conformance2/textures/misc/tex-base-level-bug.html [ Failure ]
 
 # Linux only.

content/test/gpu/gpu_tests/test_expectations/webgl_conformance_expectations.txt

@@ -8,7 +8,7 @@
 # tags: [ d3d11 d3d9 no-angle opengl opengles vulkan ]
 # tags: [ no-passthrough passthrough ]
 # tags: [ webgl-version-1 ]
-# tags: [ angle_lt_25.20.100.6444 mesa_lt_17.1.6 ]
+# tags: [ angle_lt_25.20.100.6444 ]
 # results: [ Failure RetryOnFailure Skip ]
 
 
@@ -334,9 +334,6 @@ crbug.com/992231 [ mac passthrough amd-0x679e ] conformance/context/context-size
 # Linux failures   #
 ####################
 
-# Intel driver issues
-crbug.com/680675 [ linux intel mesa_lt_17.1.6 ] conformance/extensions/webgl-compressed-texture-astc.html [ Failure ]
-
 # The following two tests only fail on Linux/Intel with Mesa 18.0.5,
 # not on Mesa 17.1.4 with the same Intel HD 630 GPU.
 crbug.com/928530 [ linux intel no-passthrough ] conformance/programs/program-test.html [ Failure ]