Generating CIDs in Blink during MHTML serialization.

chrome/browser/download/save_page_browsertest.cc

Index: chrome/browser/download/save_page_browsertest.cc
diff --git a/chrome/browser/download/save_page_browsertest.cc b/chrome/browser/download/save_page_browsertest.cc
index 85147fc722557e130a9049b9df029300620f0b7d..bfaa578f2c0f37ed3314ae83f62b9ad4f90bc4a0 100644
--- a/chrome/browser/download/save_page_browsertest.cc
+++ b/chrome/browser/download/save_page_browsertest.cc
@@ -1063,8 +1063,34 @@ IN_PROC_BROWSER_TEST_P(SavePageMultiFrameBrowserTest, NestedFrames) {
   TestMultiFramePage(save_page_type, url, 3, expected_substrings);
 }
 
+// Test for crbug.com/106364 and crbug.com/538188.
+// Test frames have the same uri ...
+//   subframe1 and subframe2 - both have src=b.htm
+//   subframe3 and subframe4 - about:blank (no src, only srcdoc attribute).
+// ... but different content (generated by main frame's javascript).
+IN_PROC_BROWSER_TEST_P(SavePageMultiFrameBrowserTest, RuntimeChanges) {
+  content::SavePageType save_page_type = GetParam();
+
+  std::vector<std::string> expected_substrings{
+      "frames-runtime-changes.htm: 4388232f-8d45-4d2e-9807-721b381be153",
+      "subframe1: 21595339-61fc-4854-b6df-0668328ea263",
+      "subframe2: adf55719-15e7-45be-9eda-d12fe782a1bd",
+      "subframe3: 50e294bf-3a5b-499d-8772-651ead26952f",
+      "subframe4: e0ea9289-7467-4d32-ba5c-c604e8d84cb7",
+  };
+
+  // TODO(lukasza): crbug.com/106364: Fix complete-html mode as well.
+  if (save_page_type == content::SAVE_PAGE_TYPE_AS_COMPLETE_HTML)
+    return;
+
+  GURL url(embedded_test_server()->GetURL(
+      "a.com", "/save_page/frames-runtime-changes.htm?do_runtime_changes=1"));
+
+  TestMultiFramePage(save_page_type, url, 5, expected_substrings);
+}
+
 INSTANTIATE_TEST_CASE_P(
-    ,
+    SaveType,
     SavePageMultiFrameBrowserTest,
     ::testing::Values(content::SAVE_PAGE_TYPE_AS_COMPLETE_HTML,
                       content::SAVE_PAGE_TYPE_AS_MHTML));