Cleanup: Remove unnecessary ".get()" from scoped_ptrs<>.

In r174057, enne@ added support for implicit testing to scoped_ptr<>. Removes
these in chrome/browser/extensions/.

BUG=232084

Review URL: https://codereview.chromium.org/13949011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194616 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/extension_function.cc b/chrome/browser/extensions/extension_function.cc
index 666a868..03e10c8 100644
--- a/chrome/browser/extensions/extension_function.cc
+++ b/chrome/browser/extensions/extension_function.cc
@@ -134,7 +134,7 @@
   }
 
   // If results were never set, we send an empty argument list.
-  if (!results_.get())
+  if (!results_)
     results_.reset(new ListValue());
 
   ipc_sender->Send(new ExtensionMsg_Response(