CacheStorage: Add ignoreSearch option to cache.delete().

third_party/WebKit/LayoutTests/http/tests/cachestorage/serviceworker/ignore-search-with-credentials.html

Index: third_party/WebKit/LayoutTests/http/tests/cachestorage/serviceworker/ignore-search-with-credentials.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/cachestorage/serviceworker/ignore-search-with-credentials.html b/third_party/WebKit/LayoutTests/http/tests/cachestorage/serviceworker/ignore-search-with-credentials.html
index cc59e92a67aced2355fe6457cb18b2b0b40521cf..82231d35250338be737efdba431b0b49bed8aefe 100644
--- a/third_party/WebKit/LayoutTests/http/tests/cachestorage/serviceworker/ignore-search-with-credentials.html
+++ b/third_party/WebKit/LayoutTests/http/tests/cachestorage/serviceworker/ignore-search-with-credentials.html
@@ -73,7 +73,15 @@ promise_test(function(test) {
           var expected = remove_query(request.url);
           assert_equals(remove_query(results[0].url), expected);
           assert_equals(remove_query(results[1].url), expected);
+          return cache.delete(request, { ignoreSearch : true });
         })
+      .then(function(result) {
+          assert_true(result);
+          return cache.matchAll(request, { ignoreSearch : true });
+        })
+      .then(function(results) {
+          assert_equals(results.length, 0);
+        });
   });
 
 </script>