Avoid cross-origin iframe issues when loading PDF in print preview

content/browser/webui/web_ui_data_source_unittest.cc

Index: content/browser/webui/web_ui_data_source_unittest.cc
diff --git a/content/browser/webui/web_ui_data_source_unittest.cc b/content/browser/webui/web_ui_data_source_unittest.cc
index 2b5d854b58f37a79375d3a30acb6ff26ec2369ac..da9b6f0c5cdc4e7679a353a0c626ea9fb700cd21 100644
--- a/content/browser/webui/web_ui_data_source_unittest.cc
+++ b/content/browser/webui/web_ui_data_source_unittest.cc
@@ -145,4 +145,10 @@ TEST_F(WebUIDataSourceTest, MimeType) {
   EXPECT_EQ(GetMimeType(".css.foo"), html);
 }
 
+TEST_F(WebUIDataSourceTest, QueryStringRemoval) {
+  std::string path = "path.js?query_string";
+  source()->source()->WillServiceRequest(nullptr, &path);
+  EXPECT_EQ("path.js", path);
+}
+
 }  // namespace content