Determine whether user is ephemeral when coming back from a crash

chromeos/dbus/cryptohome_client.cc

Index: chromeos/dbus/cryptohome_client.cc
diff --git a/chromeos/dbus/cryptohome_client.cc b/chromeos/dbus/cryptohome_client.cc
index 14fa92b1c8bcf80381acc27871cf32af7c09fc06..7963d5d27d14e47c33de1e18f7eb31ecce8ac215 100644
--- a/chromeos/dbus/cryptohome_client.cc
+++ b/chromeos/dbus/cryptohome_client.cc
@@ -59,6 +59,25 @@ class CryptohomeClientImpl : public CryptohomeClient {
   }
 
   // CryptohomeClient override.
+  virtual bool IsMountedForUser(const std::string& username,
+                                bool* is_mounted,
+                                bool* is_ephemeral_mount) OVERRIDE {
+    INITIALIZE_METHOD_CALL(method_call,
+                           cryptohome::kCryptohomeIsMountedForUser);
+    dbus::MessageWriter writer(&method_call);
+    writer.AppendString(username);
+    scoped_ptr<dbus::Response> response(
+        blocking_method_caller_.CallMethodAndBlock(&method_call));
+    if (!response.get())
+      return false;
+    dbus::MessageReader reader(response.get());
+    if (!reader.PopBool(is_mounted) ||
+        !reader.PopBool(is_ephemeral_mount))
+      return false;
+    return true;
+  }
+
+  // CryptohomeClient override.
   virtual bool Unmount(bool *success) OVERRIDE {
     INITIALIZE_METHOD_CALL(method_call, cryptohome::kCryptohomeUnmount);
     return CallBoolMethodAndBlock(&method_call, success);
@@ -428,6 +447,15 @@ class CryptohomeClientStubImpl : public CryptohomeClient {
   }
 
   // CryptohomeClient override.
+  virtual bool IsMountedForUser(const std::string& username,
+                                bool* is_mounted,
+                                bool* is_ephemeral_mount) OVERRIDE {
+    *is_mounted = true;
+    *is_ephemeral_mount = false;
+    return true;
+  }
+
+  // CryptohomeClient override.
   virtual bool Unmount(bool* success) OVERRIDE {
     *success = true;
     return true;