Fix the multi-threaded access to WeakPtr<BrowsingDataRemoverImpl>

chrome/browser/browsing_data/mock_browsing_data_remover_delegate.cc

Index: chrome/browser/browsing_data/mock_browsing_data_remover_delegate.cc
diff --git a/chrome/browser/browsing_data/mock_browsing_data_remover_delegate.cc b/chrome/browser/browsing_data/mock_browsing_data_remover_delegate.cc
index e38e3653ad058b727ec50e97912b1bd58a9c00c4..1296e9adabc39f7ee69ce5aa2dbdc5c68e56bf70 100644
--- a/chrome/browser/browsing_data/mock_browsing_data_remover_delegate.cc
+++ b/chrome/browser/browsing_data/mock_browsing_data_remover_delegate.cc
@@ -14,11 +14,9 @@ MockBrowsingDataRemoverDelegate::~MockBrowsingDataRemoverDelegate() {
   DCHECK(!expected_calls_.size()) << "Expectations were set but not verified.";
 }
 
-bool MockBrowsingDataRemoverDelegate::DoesOriginMatchEmbedderMask(
-    int origin_type_mask,
-    const GURL& origin,
-    storage::SpecialStoragePolicy* special_storage_policy) const {
-  return false;
+BrowsingDataRemoverDelegate::MaskMatcherFunction
+MockBrowsingDataRemoverDelegate::GetMaskMatcherFunction() const {
+  return BrowsingDataRemoverDelegate::MaskMatcherFunction();
 }
 
 void MockBrowsingDataRemoverDelegate::RemoveEmbedderData(