[Extenisons Bindings] Don't throw unchecked errors; add console errors

extensions/renderer/console.h

 // Copyright 2014 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.
 
 #ifndef EXTENSIONS_RENDERER_CONSOLE_H_
 #define EXTENSIONS_RENDERER_CONSOLE_H_
 
 #include <string>
 
 #include "content/public/common/console_message_level.h"
 #include "v8/include/v8.h"
 
-namespace content {
-class RenderFrame;
-}
+namespace extensions {
+class ScriptContext;
 
-namespace extensions {
-
-// Utility for logging messages to RenderFrames.
+// Utility for logging console messages.
 namespace console {
 
-// Adds |message| to the console of |render_frame|. If |render_frame| is null,
-// LOG()s the message instead.
-void AddMessage(content::RenderFrame* render_frame,
+// Adds |message| to the console of of the |script_context|. If |script_context|
+// is null, LOG()s the message instead.
+void AddMessage(ScriptContext* script_context,
                 content::ConsoleMessageLevel level,
                 const std::string& message);
 
 // Logs an Error then crashes the current process.
-void Fatal(content::RenderFrame* render_frame, const std::string& message);
+void Fatal(ScriptContext* context, const std::string& message);
 
 // Returns a new v8::Object with each standard log method (Debug/Log/Warn/Error)
 // bound to respective debug/log/warn/error methods. This is a direct drop-in
 // replacement for the standard devtools console.* methods usually accessible
 // from JS.
 v8::Local<v8::Object> AsV8Object(v8::Isolate* isolate);
 
 }  // namespace console
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_CONSOLE_H_