Extend the ToRenderFrameHost magic to FrameTreeNode* and Shell*

content/browser/dom_storage/dom_storage_browsertest.cc

Index: content/browser/dom_storage/dom_storage_browsertest.cc
diff --git a/content/browser/dom_storage/dom_storage_browsertest.cc b/content/browser/dom_storage/dom_storage_browsertest.cc
index f1d522352a2e4b54d2fe4a22ca9ce7f9a94fb540..326c91e94c37190375630ec8e1e2f9f9f2f039cc 100644
--- a/content/browser/dom_storage/dom_storage_browsertest.cc
+++ b/content/browser/dom_storage/dom_storage_browsertest.cc
@@ -30,8 +30,7 @@ class DOMStorageBrowserTest : public ContentBrowserTest {
     if (result != "pass") {
       std::string js_result;
       ASSERT_TRUE(ExecuteScriptAndExtractString(
-          the_browser->web_contents(),
-          "window.domAutomationController.send(getLog())",
+          the_browser, "window.domAutomationController.send(getLog())",
           &js_result));
       FAIL() << "Failed: " << js_result;
     }