Passwords: Remove references to BrowserThread from PasswordStore.

chrome/browser/password_manager/mock_password_store.cc

Index: chrome/browser/password_manager/mock_password_store.cc
diff --git a/chrome/browser/password_manager/mock_password_store.cc b/chrome/browser/password_manager/mock_password_store.cc
index 6b8db112c0729faadba55b27f132be0add1fda00..a1feac1a417b29780dd08459166b69c4fa0c219d 100644
--- a/chrome/browser/password_manager/mock_password_store.cc
+++ b/chrome/browser/password_manager/mock_password_store.cc
@@ -3,8 +3,15 @@
 // found in the LICENSE file.
 
 #include "chrome/browser/password_manager/mock_password_store.h"
+#include "content/public/browser/browser_thread.h"
 
-MockPasswordStore::MockPasswordStore() {}
+using content::BrowserThread;
+
+MockPasswordStore::MockPasswordStore()
+    : PasswordStore(
+        base::MessageLoopProxy::current(),
+        BrowserThread::GetMessageLoopProxyForThread(BrowserThread::DB)) {
+}
 
 // static
 scoped_refptr<RefcountedBrowserContextKeyedService> MockPasswordStore::Build(