[Chrome OS] Attempt offline and online login simultaneously

chrome/browser/chromeos/cros/cryptohome_library.cc

Index: chrome/browser/chromeos/cros/cryptohome_library.cc
diff --git a/chrome/browser/chromeos/cros/cryptohome_library.cc b/chrome/browser/chromeos/cros/cryptohome_library.cc
index 13145d30dba30fdf7658796466f4fa4df3d58ecb..38006ca34511d514f5d276f2dacf8084e9db373d 100644
--- a/chrome/browser/chromeos/cros/cryptohome_library.cc
+++ b/chrome/browser/chromeos/cros/cryptohome_library.cc
@@ -85,6 +85,10 @@ class CryptohomeLibraryImpl : public CryptohomeLibrary {
                          "Couldn't initiate async mount of cryptohome.");
   }
 
+  bool Unmount() {
+    return chromeos::CryptohomeUnmount();
+  }
+
   bool Remove(const std::string& user_email) {
     return chromeos::CryptohomeRemove(user_email.c_str());
   }
@@ -178,17 +182,6 @@ class CryptohomeLibraryStubImpl : public CryptohomeLibrary {
     return true;
   }
 
-  bool Remove(const std::string& user_email) {
-    return true;
-  }
-
-  bool AsyncRemove(const std::string& user_email, Delegate* callback) {
-    ChromeThread::PostTask(
-        ChromeThread::UI, FROM_HERE,
-        NewRunnableFunction(&DoStubCallback, callback));
-    return true;
-  }
-
   bool Mount(const std::string& user_email,
              const std::string& passhash,
              int* error_code) {
@@ -216,6 +209,21 @@ class CryptohomeLibraryStubImpl : public CryptohomeLibrary {
     return true;
   }
 
+  bool Unmount() {
+    return true;
+  }
+
+  bool Remove(const std::string& user_email) {
+    return true;
+  }
+
+  bool AsyncRemove(const std::string& user_email, Delegate* callback) {
+    ChromeThread::PostTask(
+        ChromeThread::UI, FROM_HERE,
+        NewRunnableFunction(&DoStubCallback, callback));
+    return true;
+  }
+
   bool IsMounted() {
     return true;
   }