Add UI for RuntimeErrors in the ErrorConsole

extensions/browser/extension_error.h

Index: extensions/browser/extension_error.h
diff --git a/extensions/browser/extension_error.h b/extensions/browser/extension_error.h
index 7e02bb33f89e18da20ddf1d696d911fcde973559..dff80ee25f6c123cb686acc636dea4a95aa18a84 100644
--- a/extensions/browser/extension_error.h
+++ b/extensions/browser/extension_error.h
@@ -128,10 +128,21 @@ class RuntimeError : public ExtensionError {
                logging::LogSeverity level);
   virtual ~RuntimeError();
 
+  virtual scoped_ptr<base::DictionaryValue> ToValue() const OVERRIDE;
+
   virtual std::string PrintForTest() const OVERRIDE;
 
   const GURL& context_url() const { return context_url_; }
   const StackTrace& stack_trace() const { return stack_trace_; }
+
+  // Keys used for retrieving JSON values.
+  static const char kColumnNumberKey[];
+  static const char kContextUrlKey[];
+  static const char kFunctionNameKey[];
+  static const char kLineNumberKey[];
+  static const char kStackTraceKey[];
+  static const char kUrlKey[];
+
  private:
   virtual bool IsEqualImpl(const ExtensionError* rhs) const OVERRIDE;