[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 2b293fe19a58e68f84d3e598c8144d1b6c28a3c0..13078ca97061df46808d504196a2d92335ad1bf4 100644
--- a/chrome/browser/services/gcm/push_messaging_browsertest.cc
+++ b/chrome/browser/services/gcm/push_messaging_browsertest.cc
@@ -161,6 +161,8 @@ 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);
   }