Allow comments in extension config files.

tools/json_schema_compiler/previewserver.py

Index: tools/json_schema_compiler/previewserver.py
diff --git a/tools/json_schema_compiler/previewserver.py b/tools/json_schema_compiler/previewserver.py
index c7ab26279c69cce7a2157167cc7fb03258930486..047bf394b69ebcf75c636e88fc27f760ec864324 100755
--- a/tools/json_schema_compiler/previewserver.py
+++ b/tools/json_schema_compiler/previewserver.py
@@ -21,6 +21,14 @@ from highlighters import (
     pygments_highlighter, none_highlighter, hilite_me_highlighter)
 from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
 
+# We need to get json_minify from the third_party directory.
+# This is similar to what is done in chrome/common/extensions/docs/build.py
+third_party_path = os.path.dirname(os.path.realpath(__file__)) + \
+                                   '/../../third_party/'
+if third_party_path not in sys.path:
+  sys.path.insert(0, third_party_path)
+import json_minify as minify
+
 class CompilerHandler(BaseHTTPRequestHandler):
   """A HTTPRequestHandler that outputs the result of tools/json_schema_compiler.
   """
@@ -189,7 +197,7 @@ updateEverything();
     try:
       # Get main json file
       with open(json_file_path) as json_file:
-        api_defs = json.loads(json_file.read())
+        api_defs = json.loads(minify.json_minify(json_file.read()))
       namespace = api_model.AddNamespace(api_defs[0], json_file_path)
       if not namespace:
         body.Append("<pre>Target file %s is marked nocompile</pre>" %
@@ -202,7 +210,7 @@ updateEverything();
       for dependency in api_defs[0].get('dependencies', []):
         json_file_path = os.path.join(filedir, dependency + '.json')
         with open(json_file_path) as json_file:
-          api_defs = json.loads(json_file.read())
+          api_defs = json.loads(minify.json_minify(json_file.read()))
         referenced_namespace = api_model.AddNamespace(api_defs[0],
             json_file_path)
         if referenced_namespace: