Revert of Added tests to check that WebGL extensions are available.

content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

Index: content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
diff --git a/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py b/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
index 57cb4f71f8c5cda3f3eeb78734bf71a493902483..7ee1229411ff293c4b883946930b483ed75594dc 100644
--- a/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
+++ b/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py
@@ -10,26 +10,6 @@
     super(WebGL2ConformanceExpectations, self).__init__(conformance_path)
 
   def SetExpectations(self):
-    # ===================================
-    # Extension availability expectations
-    # ===================================
-    # It's expected that not all extensions will be available on all platforms.
-    # Having a test listed here is not necessarily a problem.
-
-    self.Fail('WebglExtension.EXT_color_buffer_float',
-        ['win', 'mac', 'linux'])
-    self.Fail('WebglExtension.WEBGL_compressed_texture_astc',
-        ['win', 'mac', 'linux'])
-    self.Fail('WebglExtension.WEBGL_compressed_texture_atc',
-        ['win', 'mac', 'linux'])
-    self.Fail('WebglExtension.WEBGL_compressed_texture_etc1',
-        ['mac', 'linux'])
-    self.Fail('WebglExtension.WEBGL_compressed_texture_pvrtc',
-        ['win', 'mac', 'linux'])
-
-    # ========================
-    # Conformance expectations
-    # ========================
     # All platforms.
     self.Skip('deqp/functional/gles3/builtinprecision*.html', bug=483282)
     self.Skip('deqp/functional/gles3/draw.html', bug=483282)