Implement device token fetcher

chrome/browser/net/gaia/token_service.cc

Index: chrome/browser/net/gaia/token_service.cc
diff --git a/chrome/browser/net/gaia/token_service.cc b/chrome/browser/net/gaia/token_service.cc
index b79af6454bd525b20185cf2d5b213b3f80f3a743..5e6cf46de924e8b7ceb2d53229f7113cc886a5f7 100644
--- a/chrome/browser/net/gaia/token_service.cc
+++ b/chrome/browser/net/gaia/token_service.cc
@@ -17,8 +17,12 @@
 // Unfortunately kNumServices must be defined in the .h.
 // TODO(chron): Sync doesn't use the TalkToken anymore so we can stop
 //              requesting it.
-const char* TokenService::kServices[] = {GaiaConstants::kSyncService,
-                                         GaiaConstants::kTalkService};
+const char* TokenService::kServices[] = {
+  GaiaConstants::kSyncService,
+  GaiaConstants::kTalkService,
+  GaiaConstants::kDeviceManagementService
+};
+
 TokenService::TokenService()
     : token_loading_query_(0) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));