texture mipmap level is not zero-only in ES 3

gpu/command_buffer/build_gles2_cmd_buffer.py

Index: gpu/command_buffer/build_gles2_cmd_buffer.py
diff --git a/gpu/command_buffer/build_gles2_cmd_buffer.py b/gpu/command_buffer/build_gles2_cmd_buffer.py
index 4b870d352aef773dbcfe7db32c65fd834c722a7e..6897f0d24317ec158df302889358226db94ddb64 100755
--- a/gpu/command_buffer/build_gles2_cmd_buffer.py
+++ b/gpu/command_buffer/build_gles2_cmd_buffer.py
@@ -1998,16 +1998,6 @@ _NAMED_TYPE_INFO = {
       '5',
     ],
   },
-  'ZeroOnly': {
-    'type': 'GLint',
-    'is_complete': True,
-    'valid': [
-      '0',
-    ],
-    'invalid': [
-      '1',
-    ],
-  },
   'FalseOnly': {
     'type': 'GLboolean',
     'is_complete': True,
@@ -2684,6 +2674,7 @@ _FUNCTION_INFO = {
   'FramebufferTexture2D': {
     'decoder_func': 'DoFramebufferTexture2D',
     'gl_test_func': 'glFramebufferTexture2DEXT',
+    'unit_test': False,
     'trace_level': 1,
   },
   'FramebufferTexture2DMultisampleEXT': {