Remove the allow-displaying-mixed-content setting from Blink.

components/test_runner/test_runner.h

Index: components/test_runner/test_runner.h
diff --git a/components/test_runner/test_runner.h b/components/test_runner/test_runner.h
index 6f26a2237c5a0c41a714c99cd3e339f6ab320604..c9527d68774b09a59459b77d649a7625451af087 100644
--- a/components/test_runner/test_runner.h
+++ b/components/test_runner/test_runner.h
@@ -54,7 +54,7 @@ class WebTestDelegate;
 // 1. It implements |testRunner| javascript bindings for "global" / "ambient".
 //    Examples:
 //    - testRunner.dumpAsText (test flag affecting test behavior)
-//    - testRunner.setAllowDisplayOfInsecureContent (test flag affecting product
+//    - testRunner.setAllowRunningOfInsecureContent (test flag affecting product
 //      behavior)
 //    - testRunner.setTextSubpixelPositioning (directly interacts with product).
 //    Note that "per-view" (non-"global") bindings are handled by
@@ -406,7 +406,6 @@ class TestRunner : public WebTestRunner {
   void SetScriptsAllowed(bool allowed);
   void SetStorageAllowed(bool allowed);
   void SetPluginsAllowed(bool allowed);
-  void SetAllowDisplayOfInsecureContent(bool allowed);
   void SetAllowRunningOfInsecureContent(bool allowed);
   void SetAutoplayAllowed(bool allowed);
   void DumpPermissionClientCallbacks();