Cryptohome: Notify about error in async calls if cryptohome is not ready yet.

chromeos/cryptohome/async_method_caller.cc

Index: chromeos/cryptohome/async_method_caller.cc
diff --git a/chromeos/cryptohome/async_method_caller.cc b/chromeos/cryptohome/async_method_caller.cc
index 0b137b035fee2fd0e3bbecc45ba1f193ef4da49d..f45d1a2cbea5eccb5894500f2ce3cd4cf3d178a9 100644
--- a/chromeos/cryptohome/async_method_caller.cc
+++ b/chromeos/cryptohome/async_method_caller.cc
@@ -308,10 +308,17 @@ class AsyncMethodCallerImpl : public AsyncMethodCaller {
         base::Bind(it->second.data_callback, return_status, return_data));
     data_callback_map_.erase(it);
   }
-
   // Registers a callback which is called when the result for AsyncXXX is ready.
   void RegisterAsyncCallback(
       Callback callback, const char* error, int async_id) {
+    if (async_id == chromeos::CryptohomeClient::kNotReadyAsyncId) {
+      base::MessageLoopProxy::current()->PostTask(
+          FROM_HERE, base::Bind(callback,
+                                false,  // return status
+                                cryptohome::MOUNT_ERROR_FATAL));
+      return;
+    }
+
     if (async_id == 0) {
       LOG(ERROR) << error;
       return;
@@ -325,6 +332,13 @@ class AsyncMethodCallerImpl : public AsyncMethodCaller {
   // Registers a callback which is called when the result for AsyncXXX is ready.
   void RegisterAsyncDataCallback(
       DataCallback callback, const char* error, int async_id) {
+    if (async_id == chromeos::CryptohomeClient::kNotReadyAsyncId) {
+      base::MessageLoopProxy::current()->PostTask(
+          FROM_HERE, base::Bind(callback,
+                                false,  // return status
+                                std::string()));
+      return;
+    }
     if (async_id == 0) {
       LOG(ERROR) << error;
       return;