Report Javascript Runtime Errors to the Error Console

content/browser/web_contents/web_contents_impl.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 "content/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 3409 matching lines @@
       this, message, is_reload,
       base::Bind(&WebContentsImpl::OnDialogClosed, base::Unretained(this), rvh,
                  reply_msg));
 }
 
 bool WebContentsImpl::AddMessageToConsole(int32 level,
                                           const string16& message,
                                           int32 line_no,
                                           const string16& source_id,
                                           const string16& stack_trace) {
+  FOR_EACH_OBSERVER(WebContentsObserver,

[Devlin, 2013/08/23 20:06:51]

Cris - RenderViewHostImpl receives the IPC message, and then calls
AddMessageToConsole() on its delegate (here, a WebContentsImpl).  So this is
effectively the entry-point for the IPC.

+                    observers_,
+                    OnMessageAddedToConsole(
+                        source_id,
+                        message,
+                        stack_trace,
+                        line_no,
+                        static_cast<logging::LogSeverity>(level)));
   if (!delegate_)
     return false;
   return delegate_->AddMessageToConsole(this, level, message, line_no,
                                         source_id);
 }
 
 WebPreferences WebContentsImpl::GetWebkitPrefs() {
   // We want to base the page config off of the real URL, rather than the
   // display URL.
   GURL url = controller_.GetActiveEntry()
@@ skipping 305 matching lines @@
 }
 
 void WebContentsImpl::ClearAllPowerSaveBlockers() {
   for (PowerSaveBlockerMap::iterator i(power_save_blockers_.begin());
        i != power_save_blockers_.end(); ++i)
     STLDeleteValues(&power_save_blockers_[i->first]);
   power_save_blockers_.clear();
 }
 
 }  // namespace content