[Easy signin] Wire up userClick auth attempt to easy unlock app and back

chrome/browser/signin/easy_unlock_screenlock_state_handler_unittest.cc

Index: chrome/browser/signin/easy_unlock_screenlock_state_handler_unittest.cc
diff --git a/chrome/browser/signin/easy_unlock_screenlock_state_handler_unittest.cc b/chrome/browser/signin/easy_unlock_screenlock_state_handler_unittest.cc
index d8d93dda6d3be0d647b5fe869ede298840f536bf..feae058b963d4a842f902395ba8197ec411344dc 100644
--- a/chrome/browser/signin/easy_unlock_screenlock_state_handler_unittest.cc
+++ b/chrome/browser/signin/easy_unlock_screenlock_state_handler_unittest.cc
@@ -93,6 +93,12 @@ class TestLockHandler : public ScreenlockBridge::LockHandler {
     ASSERT_FALSE(true) << "Should not be reached.";
   }
 
+  virtual void AttemptEasySignin(const std::string& user_email,
+                                 const std::string& secret,
+                                 const std::string& key_label) OVERRIDE {
+    ASSERT_FALSE(true) << "Should not be reached.";
+  }
+
   // Utility methods used by tests:
 
   // Gets last set auth value.