Revert of gpu: Add CHROMIUM_sync_query extension.

gpu/command_buffer/tests/gl_query_unittest.cc

Index: gpu/command_buffer/tests/gl_query_unittest.cc
diff --git a/gpu/command_buffer/tests/gl_query_unittest.cc b/gpu/command_buffer/tests/gl_query_unittest.cc
index 52423a832714bc4b39abf1c152a65b7a6c0f97e3..9a8948fa15478301223fcf3bcc9e9581cc8c22ac 100644
--- a/gpu/command_buffer/tests/gl_query_unittest.cc
+++ b/gpu/command_buffer/tests/gl_query_unittest.cc
@@ -150,22 +150,6 @@
   EXPECT_LE(query_result, kTimePrecisionMicroseconds);
 }
 
-TEST_F(QueryTest, SyncQueryBasic) {
-  EXPECT_TRUE(GLTestHelper::HasExtension("GL_CHROMIUM_sync_query"));
-
-  GLuint query = 0;
-  glGenQueriesEXT(1, &query);
-
-  glBeginQueryEXT(GL_COMMANDS_COMPLETED_CHROMIUM, query);
-  glEndQueryEXT(GL_COMMANDS_COMPLETED_CHROMIUM);
-
-  glFinish();
-
-  GLuint available = 0;
-  glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_AVAILABLE_EXT, &available);
-  EXPECT_TRUE(available);
-}
-
 }  // namespace gpu