Use sdk/tests when syncing from upstream Khronos WebGL tests

tests/wpt/webgl/meta/conformance/rendering/draw-elements-out-of-bounds.html.ini

@@ -0,0 +1,4 @@
+[draw-elements-out-of-bounds.html]
+  [WebGL test #0: getError expected: INVALID_OPERATION. Was NO_ERROR : after evaluating: gl.drawElements(gl.TRIANGLES, 0, gl.UNSIGNED_BYTE, 0)]
+    expected: FAIL
+

tests/wpt/webgl/meta/conformance/rendering/point-size.html.ini

@@ -1,7 +1,7 @@
 [point-size.html]
-  [WebGL test #9: at (0, 0) expected: 255,0,0 was 0,0,0]
+  [WebGL test #9: should be 255,0,0\nat (0, 0) expected: 255,0,0 was 0,0,0]
     expected: FAIL
 
-  [WebGL test #18: at (0, 0) expected: 255,0,0 was 0,0,0]
+  [WebGL test #18: should be 255,0,0\nat (0, 0) expected: 255,0,0 was 0,0,0]
     expected: FAIL
 

tests/wpt/webgl/meta/conformance/rendering/point-with-gl-pointcoord-in-fragment-shader.html.ini

@@ -1,4 +1,4 @@
 [point-with-gl-pointcoord-in-fragment-shader.html]
-  [WebGL test #0: at (32, 32) expected: 0,255,0,255 was 0,0,0,255]
+  [WebGL test #0: Center pixel should be green\nat (32, 32) expected: 0,255,0,255 was 0,0,0,255]
     expected: FAIL
 

tests/wpt/webgl/meta/conformance/rendering/preservedrawingbuffer-leak.html.ini

@@ -0,0 +1,8 @@
+[preservedrawingbuffer-leak.html]
+  expected: ERROR
+  [WebGL test #0: Unable to fetch WebGL rendering context for Canvas]
+    expected: FAIL
+
+  [Overall test]
+    expected: NOTRUN
+

tests/wpt/webgl/meta/conformance/rendering/rendering-stencil-large-viewport.html.ini

@@ -0,0 +1,2 @@
+[rendering-stencil-large-viewport.html]
+  expected: CRASH