Allow content script insertion on about:-URLs.

chrome/browser/extensions/content_script_apitest.cc

Index: chrome/browser/extensions/content_script_apitest.cc
diff --git a/chrome/browser/extensions/content_script_apitest.cc b/chrome/browser/extensions/content_script_apitest.cc
index b86889e06b733c6cef9156ff81ff1c854fdca006..fdfa1f24d73c4e8c4f51a02f54c65419bdf5306d 100644
--- a/chrome/browser/extensions/content_script_apitest.cc
+++ b/chrome/browser/extensions/content_script_apitest.cc
@@ -84,6 +84,12 @@ IN_PROC_BROWSER_TEST_F(ExtensionApiTest, ContentScriptAboutBlankIframes) {
       RunExtensionTest("content_scripts/about_blank_iframes")) << message_;
 }
 
+IN_PROC_BROWSER_TEST_F(ExtensionApiTest, ContentScriptAboutBlankAndSrcdoc) {
+  ASSERT_TRUE(StartEmbeddedTestServer());
+  ASSERT_TRUE(
+      RunExtensionTest("content_scripts/about_blank_srcdoc")) << message_;
+}
+
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, ContentScriptExtensionIframe) {
   ASSERT_TRUE(StartEmbeddedTestServer());
   ASSERT_TRUE(RunExtensionTest("content_scripts/extension_iframe")) << message_;