Hook up CryptAuthGCMManager to the enrollment and device sync managers.

chrome/browser/signin/easy_unlock_service.cc

Index: chrome/browser/signin/easy_unlock_service.cc
diff --git a/chrome/browser/signin/easy_unlock_service.cc b/chrome/browser/signin/easy_unlock_service.cc
index de94c7d26146c48d7bd5a4136c8f0c486e1bb4f7..4ccbcda307e4020cac3f421746b0838d3a5579ab 100644
--- a/chrome/browser/signin/easy_unlock_service.cc
+++ b/chrome/browser/signin/easy_unlock_service.cc
@@ -21,6 +21,8 @@
 #include "base/version.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/services/gcm/gcm_profile_service.h"
+#include "chrome/browser/services/gcm/gcm_profile_service_factory.h"
 #include "chrome/browser/signin/chrome_proximity_auth_client.h"
 #include "chrome/browser/signin/easy_unlock_app_manager.h"
 #include "chrome/browser/signin/easy_unlock_service_factory.h"
@@ -685,6 +687,12 @@ cryptauth::DeviceClassifier EasyUnlockService::GetDeviceClassifier() {
   return device_classifier;
 }
 
+gcm::GCMDriver* EasyUnlockService::GetGCMDriver() {
+  gcm::GCMProfileService* gcm_profile_service =
+      gcm::GCMProfileServiceFactory::GetForProfile(profile_);
+  return gcm_profile_service->driver();
+}
+
 void EasyUnlockService::Shutdown() {
   if (shut_down_)
     return;