Update WebGL2 conformance expectations

Remove following suppressions for Intel:
deqp/functional/gles3/framebufferblit/conversion_07.html

BUG=598902

Change-Id: Ia1be2d893438d43a571838eff571427093bef145
Reviewed-on: https://chromium-review.googlesource.com/c/1317349Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Lin Sun <lin.sun@intel.com>
Cr-Commit-Position: refs/heads/master@{#607891}

content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

@@ -983,8 +983,6 @@ class WebGL2ConformanceExpectations(WebGLConformanceExpectations):
         ['linux', 'intel'], bug=680675)
 
     # Linux Intel with ANGLE only
-    self.Fail('deqp/functional/gles3/framebufferblit/conversion_07.html',
-        ['linux', 'intel', 'opengl'], bug=598902)
     self.Fail('conformance2/rendering/blitframebuffer-filter-srgb.html',
         ['linux', 'intel', 'opengl'], bug=680276)
     self.Fail('conformance2/rendering/blitframebuffer-outside-readbuffer.html',