[Sync] Removed passphrase helper methods, removed ((n)) pattern, and fixed lint violations.

chrome/browser/sync/test/integration/sync_extension_helper.cc

Index: chrome/browser/sync/test/integration/sync_extension_helper.cc
diff --git a/chrome/browser/sync/test/integration/sync_extension_helper.cc b/chrome/browser/sync/test/integration/sync_extension_helper.cc
index e342e866e016b6c74af347fc85af50dc6fefad53..7ba1088ca8ea43974d7a6263fd1f9bc7b74546b5 100644
--- a/chrome/browser/sync/test/integration/sync_extension_helper.cc
+++ b/chrome/browser/sync/test/integration/sync_extension_helper.cc
@@ -4,6 +4,10 @@
 
 #include "chrome/browser/sync/test/integration/sync_extension_helper.h"
 
+#include <list>
+#include <memory>
+#include <utility>
+
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/guid.h"
@@ -186,7 +190,7 @@ void SyncExtensionHelper::InstallExtensionsPendingForSync(Profile* profile) {
   std::list<std::string>::const_iterator iter;
   const extensions::PendingExtensionInfo* info = NULL;
   for (iter = pending_crx_ids.begin(); iter != pending_crx_ids.end(); ++iter) {
-    ASSERT_TRUE((info = pending_extension_manager->GetById(*iter)));
+    ASSERT_TRUE(info = pending_extension_manager->GetById(*iter));
     if (!info->is_from_sync())
       continue;