Removing Nope button in Update password prompt according to mocks.

chrome/browser/password_manager/update_password_infobar_delegate_android.cc

Index: chrome/browser/password_manager/update_password_infobar_delegate_android.cc
diff --git a/chrome/browser/password_manager/update_password_infobar_delegate_android.cc b/chrome/browser/password_manager/update_password_infobar_delegate_android.cc
index 56b8e17c63249a0e27d6ac4cafe1e3114342c953..c4fdc05c0b33eac62b7ee4edd8c08e9fc075e08a 100644
--- a/chrome/browser/password_manager/update_password_infobar_delegate_android.cc
+++ b/chrome/browser/password_manager/update_password_infobar_delegate_android.cc
@@ -82,11 +82,13 @@ UpdatePasswordInfoBarDelegate::GetIdentifier() const {
   return UPDATE_PASSWORD_INFOBAR_DELEGATE;
 }
 
+int UpdatePasswordInfoBarDelegate::GetButtons() const {
+  return BUTTON_OK;
+}
+
 base::string16 UpdatePasswordInfoBarDelegate::GetButtonLabel(
     InfoBarButton button) const {
-  return l10n_util::GetStringUTF16((button == BUTTON_OK)
-                                       ? IDS_PASSWORD_MANAGER_UPDATE_BUTTON
-                                       : IDS_PASSWORD_MANAGER_CANCEL_BUTTON);
+  return l10n_util::GetStringUTF16(IDS_PASSWORD_MANAGER_UPDATE_BUTTON);
 }
 
 bool UpdatePasswordInfoBarDelegate::Accept() {