IDL compiler: Minor cleanup (reformat comments, removed pylint comment)

Super minor clean up without a change on code.

Bug: 839389
Change-Id: I6be0c51f65507fadbb416975c3c772668d4d524e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1768842Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#690281}

third_party/blink/renderer/bindings/scripts/web_idl/extended_attribute_test.py

@@ -2,7 +2,6 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-# pylint: disable=import-error,print-statement,relative-import
 """Unit tests for extended_attributes.py."""
 
 import unittest

third_party/blink/renderer/bindings/scripts/web_idl/user_defined_type.py

@@ -10,8 +10,7 @@ class UserDefinedType(WithIdentifier):
     """
     UserDefinedType is a common base class of spec-author-defined types.
 
-    Spec-author-defined types are top-level IDL definitions given an unique
-    name.
+    Spec-author-defined types are top-level IDL definitions given an identifier.
     """
 
     def __init__(self, identifier):
@@ -19,42 +18,27 @@ class UserDefinedType(WithIdentifier):
 
     @property
     def is_interface(self):
-        """
-        Returns True if |self| represents an Interface.
-        @return bool
-        """
+        """Returns True if this is an IDL interface."""
         return False
 
     @property
     def is_dictionary(self):
-        """
-        Returns True if |self| represents a Dictionary.
-        @return bool
-        """
+        """Returns True if this is an IDL dictionary."""
         return False
 
     @property
     def is_callback_function(self):
-        """
-        Returns True if |self| represents a CallbackFunction.
-        @return bool
-        """
+        """Returns True if this is an IDL callback function."""
         return False
 
     @property
     def is_callback_interface(self):
-        """
-        Returns True if |self| represents a CallbackInterface.
-        @return bool
-        """
+        """Returns True if this is an IDL callback interface."""
         return False
 
     @property
     def is_enumeration(self):
-        """
-        Returns True if |self| represents an Enumeration.
-        @return bool
-        """
+        """Returns True if this is an IDL enumeration."""
         return False