Update chrome/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/browser/extensions/convert_user_script.cc

Index: chrome/browser/extensions/convert_user_script.cc
diff --git a/chrome/browser/extensions/convert_user_script.cc b/chrome/browser/extensions/convert_user_script.cc
index de4a2b5bd50d8da2bbde427d38fa01c657347a5e..6f3b4514cee609f12591f1c4f18001fe2363bfb2 100644
--- a/chrome/browser/extensions/convert_user_script.cc
+++ b/chrome/browser/extensions/convert_user_script.cc
@@ -180,7 +180,7 @@ scoped_refptr<Extension> ConvertUserScriptToExtension(
       Extension::NO_FLAGS,
       &utf8_error);
   *error = UTF8ToUTF16(utf8_error);
-  if (!extension) {
+  if (!extension.get()) {
     NOTREACHED() << "Could not init extension " << *error;
     return NULL;
   }