Replace "WebKit" with "Blink" in python style check code.

As the comment in main.py by tkent@, replace "WebKit" with "Blink".

Change-Id: I0277158f102a96be6d40381a7d8880f32b221f55
Reviewed-on: https://chromium-review.googlesource.com/c/1481184Reviewed-by: Kent Tamura <tkent@chromium.org>
Commit-Queue: Zhuoyu Qian <zhuoyu.qian@samsung.com>
Cr-Commit-Position: refs/heads/master@{#634491}

third_party/blink/tools/blinkpy/style/main.py

@@ -100,8 +100,7 @@ def change_directory(filesystem, checkout_root, paths):
     return paths
 
 
-# TODO(tkent): Replace "WebKit" with "Blink" in code.
-class CheckWebKitStyle(object):
+class CheckBlinkStyle(object):
 
     def _engage_awesome_stderr_hacks(self):
         # Change stderr to write with replacement characters so we don't die

third_party/blink/tools/check_blink_style.py

@@ -40,8 +40,8 @@ find is legitimately a problem."""
 import sys
 
 from blinkpy.common import version_check  # pylint: disable=unused-import
-from blinkpy.style.main import CheckWebKitStyle
+from blinkpy.style.main import CheckBlinkStyle
 
 
 if __name__ == "__main__":
-    sys.exit(CheckWebKitStyle().main())
+    sys.exit(CheckBlinkStyle().main())