- Add keyboard and focus notifications (issue #508).

- Add CefDOMNode::IsEditable method.
- List interfaces alphabetically in CefClient.
- Correct error checking for code and command input.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@680 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser/frame_host_impl.cc

@@ -153,6 +153,11 @@ void CefFrameHostImpl::LoadString(const CefString& string,
 void CefFrameHostImpl::ExecuteJavaScript(const CefString& jsCode,
                                          const CefString& scriptUrl,
                                          int startLine) {
+  if (jsCode.empty())
+    return;
+  if (startLine < 0)
+    startLine = 0;
+
   base::AutoLock lock_scope(state_lock_);
   if (browser_) {
     browser_->SendCode((is_main_frame_ ? kMainFrameId : frame_id_), true,