[Push] Enable PushManager.hasPermission() in browser tests.

chrome/browser/services/gcm/push_messaging_browsertest.cc

Index: chrome/browser/services/gcm/push_messaging_browsertest.cc
diff --git a/chrome/browser/services/gcm/push_messaging_browsertest.cc b/chrome/browser/services/gcm/push_messaging_browsertest.cc
index 3158ce730401d995810097406bc57a4aaf600f70..2baa4893d79d91f680f0e1ae37f06504c77f9740 100644
--- a/chrome/browser/services/gcm/push_messaging_browsertest.cc
+++ b/chrome/browser/services/gcm/push_messaging_browsertest.cc
@@ -167,6 +167,8 @@ class PushMessagingBrowserTest : public InProcessBrowserTest {
   // InProcessBrowserTest:
   void SetUpCommandLine(base::CommandLine* command_line) override {
     command_line->AppendSwitch(switches::kEnablePushMessagePayload);
+    command_line->AppendSwitch(switches::kEnablePushMessagingHasPermission);
+
     InProcessBrowserTest::SetUpCommandLine(command_line);
   }