Add support for references in different paths in apis

build/json_schema_bundle_compile.gypi

Index: build/json_schema_bundle_compile.gypi
diff --git a/build/json_schema_bundle_compile.gypi b/build/json_schema_bundle_compile.gypi
index 7e712d7df49e45931305256e7342f98b02d3780e..26e13a7ea91cb30970ac6c9c85f528d7d73a1b89 100644
--- a/build/json_schema_bundle_compile.gypi
+++ b/build/json_schema_bundle_compile.gypi
@@ -7,6 +7,11 @@
     # When including this gypi, the following variables must be set:
     #   schema_files:
     #     An array of json or idl files that comprise the api model.
+    #   schema_include_rules (optional):
+    #     An array of paths to include when searching for referenced objects,
+    #     with the namespace separated by a :.
+    #     Example:
+    #       [ '/foo/bar:Foo::Bar::%(namespace)s' ]
     #   cc_dir:
     #     The directory to put the generated code in.
     #   root_namespace:
@@ -20,6 +25,7 @@
     'api_gen_dir': '<(DEPTH)/tools/json_schema_compiler',
     'api_gen': '<(api_gen_dir)/compiler.py',
     'impl_dir%': 'chrome/browser/extensions/api',
+    'schema_include_rules': [],
   },
   'actions': [
     {
@@ -54,6 +60,7 @@
         '--namespace=<(root_namespace)',
         '--generator=cpp-bundle',
         '--impl-dir=<(impl_dir)',
+        '--include-rules=<(schema_include_rules)',
         '<@(schema_files)',
         '<@(non_compiled_schema_files)',
       ],