[PasswordManager] Fix Flaky BrowserTest related to dynamically created

chrome/browser/password_manager/password_manager_test_base.h

Index: chrome/browser/password_manager/password_manager_test_base.h
diff --git a/chrome/browser/password_manager/password_manager_test_base.h b/chrome/browser/password_manager/password_manager_test_base.h
index 2a134ac98b5a7f375aea5cfea707687d9116486f..1135de863df14c0e4247a651a15bb08438341913 100644
--- a/chrome/browser/password_manager/password_manager_test_base.h
+++ b/chrome/browser/password_manager/password_manager_test_base.h
@@ -8,6 +8,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/test/base/in_process_browser_test.h"
+#include "components/password_manager/core/browser/password_store_consumer.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/test/test_utils.h"
 
@@ -15,6 +16,10 @@ namespace autofill {
 struct PasswordForm;
 }
 
+namespace password_manager {
+class PasswordStore;
+}
+
 class NavigationObserver : public content::WebContentsObserver {
  public:
   explicit NavigationObserver(content::WebContents* web_contents);
@@ -52,6 +57,26 @@ class NavigationObserver : public content::WebContentsObserver {
   DISALLOW_COPY_AND_ASSIGN(NavigationObserver);
 };
 
+class DummyStoreConsumer : public password_manager::PasswordStoreConsumer {
+ public:
+  DummyStoreConsumer();
+  ~DummyStoreConsumer() override;
+
+  // password_manager::PasswordStoreConsumer
+  void OnGetPasswordStoreResults(
+      ScopedVector<autofill::PasswordForm> results) override;
+
+  // Make a dummy GetLogins() request ot |password_store| and wait for its
+  // response
+  void RequestLoginsAndWait(
+      scoped_refptr<password_manager::PasswordStore> password_store);
+
+ private:
+  scoped_refptr<content::MessageLoopRunner> message_loop_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(DummyStoreConsumer);
+};
+
 // Observes the save password prompt (bubble or infobar) for a specified
 // WebContents, keeps track of whether or not it is currently shown, and allows
 // accepting saving passwords through it.