Allow multiple logging::LogMessage{Handler,Listener}s

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 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 "content/browser/frame_host/render_frame_host_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 963 matching lines @@
     const base::string16& source_id) {
   if (level < logging::LOG_VERBOSE || level > logging::LOG_FATAL) {
     bad_message::ReceivedBadMessage(
         GetProcess(), bad_message::RFH_DID_ADD_CONSOLE_MESSAGE_BAD_SEVERITY);
     return;
   }
 
   if (delegate_->DidAddMessageToConsole(level, message, line_no, source_id))
     return;
 
+  // In order for CSP violation detections in the tests to work, console
+  // messages must be forwarded to logging::LogMessage().
+  // Ref: https://crbug.com/638050
+
   // Pass through log level only on WebUI pages to limit console spew.
   const bool is_web_ui =
       HasWebUIScheme(delegate_->GetMainFrameLastCommittedURL());
   const int32_t resolved_level = is_web_ui ? level : ::logging::LOG_INFO;
 
   // LogMessages can be persisted so this shouldn't be logged in incognito mode.
   // This rule is not applied to WebUI pages, because source code of WebUI is a
   // part of Chrome source code, and we want to treat messages from WebUI the
   // same way as we treat log messages from native code.
   if (::logging::GetMinLogLevel() <= resolved_level &&
@@ skipping 2353 matching lines @@
   // There is no pending NavigationEntry in these cases, so pass 0 as the
   // pending_nav_entry_id. If the previous handle was a prematurely aborted
   // navigation loaded via LoadDataWithBaseURL, propagate the entry id.
   return NavigationHandleImpl::Create(
       params.url, frame_tree_node_, is_renderer_initiated,
       params.was_within_same_page, base::TimeTicks::Now(),
       entry_id_for_data_nav, false);  // started_from_context_menu
 }
 
 }  // namespace content