
* Electron version: 1.4.6
* Operating system: macOS Sierra

### Expected behavior

Callbacks executed from `ipcRenderer.on` or `setImmediate` will be recorded in devtool timeline

### Actual behavior

Callbacks on `ipcRenderer.on` or `setImmediate` not recorded
(Callbacks on `setTimeout` are recorded normally)

### How to reproduce

This is a simple example that do some heavy task in `ipcRenderer.on` callback:
https://github.com/seanchas116/electron-testings/tree/master/timeline-ipc
atom/renderer/atom_render_view_observer.cc
#include "atom/renderer/atom_render_view_observer.h"
#include <string>
#include <vector>
#include "atom/common/native_mate_converters/string16_converter.h"
#include "atom/common/api/api_messages.h"
#include "atom/common/api/event_emitter_caller.h"
#include "atom/common/native_mate_converters/value_converter.h"
#include "atom/common/node_includes.h"
#include "atom/common/options_switches.h"
#include "atom/renderer/atom_renderer_client.h"
#include "base/command_line.h"
#include "base/strings/string_number_conversions.h"
#include "content/public/renderer/render_view.h"
#include "ipc/ipc_message_macros.h"
#include "native_mate/dictionary.h"
#include "net/base/net_module.h"
#include "net/grit/net_resources.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebDraggableRegion.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebKit.h"
#include "third_party/WebKit/public/web/WebLocalFrame.h"
#include "third_party/WebKit/public/web/WebView.h"
#include "ui/base/resource/resource_bundle.h"
namespace atom {
namespace {
bool GetIPCObject(v8::Isolate* isolate,