Add use-chromium-style-naming option to Blink GC plugin.

tools/clang/blink_gc_plugin/tests/legacy_naming/test.py

Index: tools/clang/blink_gc_plugin/tests/legacy_naming/test.py
diff --git a/tools/clang/blink_gc_plugin/tests/test.py b/tools/clang/blink_gc_plugin/tests/legacy_naming/test.py
similarity index 94%
copy from tools/clang/blink_gc_plugin/tests/test.py
copy to tools/clang/blink_gc_plugin/tests/legacy_naming/test.py
index a380cc63d9e1c49ea47b66bdfe2f1858c3e63a66..475f6fbff907b66eeb9f93c8342f0afe39a0da3f 100755
--- a/tools/clang/blink_gc_plugin/tests/test.py
+++ b/tools/clang/blink_gc_plugin/tests/legacy_naming/test.py
@@ -9,7 +9,7 @@ import subprocess
 import sys
 
 script_dir = os.path.dirname(os.path.realpath(__file__))
-tool_dir = os.path.abspath(os.path.join(script_dir, '../../pylib'))
+tool_dir = os.path.abspath(os.path.join(script_dir, '../../../pylib'))
 sys.path.insert(0, tool_dir)
 
 from clang import plugin_testing
@@ -27,7 +27,7 @@ class BlinkGcPluginTest(plugin_testing.ClangPluginTest):
     if os.path.exists('%s.graph.json' % test_name):
       try:
         actual = subprocess.check_output(
-            ['python', '../process-graph.py', '-c',
+            ['python', '../../process-graph.py', '-c',
              '%s.graph.json' % test_name],
             stderr=subprocess.STDOUT)
       except subprocess.CalledProcessError, e: