Update webgl conformance tests (#33121)

* Update python -> python3 for helper script.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Update webgl conformance testsuite patches.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Import WebGL conformance testsuite for August 19, 2024.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Update expected results.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Track the commit used for webgl conformance test import.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

tests/wpt/webgl/meta/conformance/glsl/misc/fragcolor-fragdata-invariant.html.ini

@@ -3,3 +3,5 @@
   [WebGL test #0: [unexpected link status\] Declaring both gl_FragColor and gl_FragData invariant should succeed.]
     expected: FAIL
 
+  [WebGL test #0: [unexpected link status\] (expected: true) Declaring both gl_FragColor and gl_FragData invariant should succeed.]
+    expected: FAIL

tests/wpt/webgl/meta/conformance/glsl/misc/shader-varying-packing-restrictions.html.ini

@@ -66,3 +66,51 @@
   [WebGL test #20: [unexpected link status\] shaders with varying array of vec4 with one more than the maximum number of elements accessing last element should fail]
     expected:
       if os == "mac": FAIL
+
+  [WebGL test #2: [unexpected link status\] (expected: false) shaders with varying array of float with one more than the maximum number of elements accessing last element should fail]
+    expected: FAIL
+
+  [WebGL test #3: [unexpected link status\] (expected: false) shaders with varying array of float with one more than the maximum number of elements accessing first element should fail]
+    expected: FAIL
+
+  [WebGL test #4: [unexpected link status\] (expected: false) shaders with one more than the maximum number of varyings of float should fail]
+    expected: FAIL
+
+  [WebGL test #8: [unexpected link status\] (expected: false) shaders with varying array of vec2 with one more than the maximum number of elements accessing last element should fail]
+    expected: FAIL
+
+  [WebGL test #9: [unexpected link status\] (expected: false) shaders with varying array of vec2 with one more than the maximum number of elements accessing first element should fail]
+    expected: FAIL
+
+  [WebGL test #10: [unexpected link status\] (expected: false) shaders with one more than the maximum number of varyings of vec2 should fail]
+    expected: FAIL
+
+  [WebGL test #14: [unexpected link status\] (expected: false) shaders with varying array of vec3 with one more than the maximum number of elements accessing last element should fail]
+    expected: FAIL
+
+  [WebGL test #15: [unexpected link status\] (expected: false) shaders with varying array of vec3 with one more than the maximum number of elements accessing first element should fail]
+    expected: FAIL
+
+  [WebGL test #16: [unexpected link status\] (expected: false) shaders with one more than the maximum number of varyings of vec3 should fail]
+    expected: FAIL
+
+  [WebGL test #22: [unexpected link status\] (expected: false) shaders with one more than the maximum number of varyings of vec4 should fail]
+    expected: FAIL
+
+  [WebGL test #26: [unexpected link status\] (expected: false) shaders with varying array of mat2 with one more than the maximum number of elements accessing last element should fail]
+    expected: FAIL
+
+  [WebGL test #27: [unexpected link status\] (expected: false) shaders with varying array of mat2 with one more than the maximum number of elements accessing first element should fail]
+    expected: FAIL
+
+  [WebGL test #28: [unexpected link status\] (expected: false) shaders with one more than the maximum number of varyings of mat2 should fail]
+    expected: FAIL
+
+  [WebGL test #32: [unexpected link status\] (expected: false) shaders with varying array of mat3 with one more than the maximum number of elements accessing last element should fail]
+    expected: FAIL
+
+  [WebGL test #33: [unexpected link status\] (expected: false) shaders with varying array of mat3 with one more than the maximum number of elements accessing first element should fail]
+    expected: FAIL
+
+  [WebGL test #34: [unexpected link status\] (expected: false) shaders with one more than the maximum number of varyings of mat3 should fail]
+    expected: FAIL

tests/wpt/webgl/meta/conformance/glsl/misc/shader-with-define-line-continuation.frag.html.ini

@@ -1,5 +0,0 @@
-[shader-with-define-line-continuation.frag.html]
-  bug: https://github.com/servo/servo/issues/20601
-  [WebGL test #0: [unexpected link status\] fragment shader that uses line continuation macro should fail]
-    expected: FAIL
-

tests/wpt/webgl/meta/conformance/glsl/misc/shader-with-global-variable-precision-mismatch.html.ini

@@ -9,3 +9,11 @@
   [WebGL test #2: [unexpected link status\] mismatching precision for structure uniforms causes link error (as expected)]
     expected: FAIL
 
+  [WebGL test #0: [unexpected link status\] (expected: false) mismatching precision for uniforms causes link error (as expected)]
+    expected: FAIL
+
+  [WebGL test #1: [unexpected link status\] (expected: false) mismatching precision for int uniforms with default precision causes link error (as expected)]
+    expected: FAIL
+
+  [WebGL test #2: [unexpected link status\] (expected: false) mismatching precision for structure uniforms causes link error (as expected)]
+    expected: FAIL

tests/wpt/webgl/meta/conformance/glsl/misc/shaders-with-invariance.html.ini

@@ -21,3 +21,11 @@
     expected:
       if os == "mac": FAIL
 
+  [WebGL test #9: [unexpected link status\] (expected: false) vertex shader with variant gl_Position and fragment shader with invariant gl_FragCoord must fail]
+    expected: FAIL
+
+  [WebGL test #12: [unexpected link status\] (expected: false) vertex shader with variant gl_PointSize and fragment shader with invariant gl_PointCoord must fail]
+    expected: FAIL
+
+  [WebGL test #16: [unexpected link status\] (expected: true) vertex shader with variant varying and fragment shader with invariant (global setting) varying must succeed]
+    expected: FAIL

tests/wpt/webgl/meta/conformance/glsl/misc/shaders-with-name-conflicts.html.ini

@@ -0,0 +1,3 @@
+[shaders-with-name-conflicts.html]
+  [WebGL test #0: [unexpected link status\] (expected: true) using the same name for a vertex shader attribute and fragment shader uniform should succeed]
+    expected: FAIL

tests/wpt/webgl/meta/conformance/glsl/misc/shaders-with-uniform-structs.html.ini

@@ -3,3 +3,5 @@
   [WebGL test #5: [unexpected link status\] Structures must have the same type definitions (including precision) to be considered the same type.]
     expected: FAIL
 
+  [WebGL test #5: [unexpected link status\] (expected: false) Structures must have the same type definitions (including precision) to be considered the same type.]
+    expected: FAIL