Extension-created windows should share the creator's BrowingInstance.

chrome/browser/extensions/extension_apitest.cc

Index: chrome/browser/extensions/extension_apitest.cc
diff --git a/chrome/browser/extensions/extension_apitest.cc b/chrome/browser/extensions/extension_apitest.cc
index 233e213749e2d1b59a1b260bf5117f18d0c5a4da..7eb080c9e2eb49bafe79156fb02fc3138e35f99c 100644
--- a/chrome/browser/extensions/extension_apitest.cc
+++ b/chrome/browser/extensions/extension_apitest.cc
@@ -175,6 +175,13 @@ bool ExtensionApiTest::RunExtensionTest(const std::string& extension_name) {
       extension_name, std::string(), NULL, kFlagEnableFileAccess);
 }
 
+bool ExtensionApiTest::RunExtensionTestWithArg(
+    const std::string& extension_name,
+    const char* custom_arg) {
+  return RunExtensionTestImpl(extension_name, std::string(), custom_arg,
+                              kFlagEnableFileAccess);
+}
+
 bool ExtensionApiTest::RunExtensionTestIncognito(
     const std::string& extension_name) {
   return RunExtensionTestImpl(extension_name,