PlzNavigate: Move navigation-level mixed content checks to the browser.

chrome/renderer/content_settings_observer.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/content_settings_observer.h"
 
 #include "chrome/common/render_messages.h"
 #include "chrome/common/ssl_insecure_content.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/renderer/document_state.h"
@@ skipping 370 matching lines @@
 }
 
 bool ContentSettingsObserver::allowMutationEvents(bool default_value) {
   return IsPlatformApp() ? false : default_value;
 }
 
 bool ContentSettingsObserver::allowRunningInsecureContent(
     bool allowed_per_settings,
     const blink::WebSecurityOrigin& origin,
     const blink::WebURL& resource_url) {
+  // Note: this implementation is a mirror of
+  // Browser::ShouldAllowRunningInsecureContent.
   FilteredReportInsecureContentRan(GURL(resource_url));
 
   if (!allow_running_insecure_content_ && !allowed_per_settings) {
     DidBlockContentType(CONTENT_SETTINGS_TYPE_MIXEDSCRIPT);
     return false;
   }
 
   return true;
 }
 
@@ skipping 128 matching lines @@
 
   // If the scheme is file:, an empty file name indicates a directory listing,
   // which requires JavaScript to function properly.
   if (base::EqualsASCII(protocol, url::kFileScheme)) {
     return document_url.SchemeIs(url::kFileScheme) &&
            document_url.ExtractFileName().empty();
   }
 
   return false;
 }