Add BrowserWindow.restart() to restart renderer process.

browser/api/lib/browser_window.coffee

@@ -14,6 +14,9 @@ BrowserWindow::toggleDevTools = ->
     @openDevTools()
     v8Util.setHiddenValue this, 'devtoolsOpened', true
 
+BrowserWindow::restart = ->
+  @loadUrl(@getUrl())
+
 BrowserWindow.getFocusedWindow = ->
   windows = objectsRegistry.getAllWindows()
   return window for window in windows when window.isFocused()

browser/atom_browser_client.cc

@@ -38,6 +38,14 @@ void AtomBrowserClient::OverrideWebkitPrefs(
   prefs->enable_scroll_animator = false;
 }
 
+bool AtomBrowserClient::ShouldSwapProcessesForNavigation(
+    content::SiteInstance* site_instance,
+    const GURL& current_url,
+    const GURL& new_url) {
+  // Restart renderer process if navigating to the same url.
+  return current_url == new_url;
+}
+
 brightray::BrowserMainParts* AtomBrowserClient::OverrideCreateBrowserMainParts(
     const content::MainFunctionParams&) {
   return new AtomBrowserMainParts;

browser/atom_browser_client.h

@@ -18,6 +18,10 @@ class AtomBrowserClient : public brightray::BrowserClient {
   virtual void OverrideWebkitPrefs(content::RenderViewHost* render_view_host,
                                    const GURL& url,
                                    webkit_glue::WebPreferences* prefs) OVERRIDE;
+  virtual bool ShouldSwapProcessesForNavigation(
+      content::SiteInstance* site_instance,
+      const GURL& current_url,
+      const GURL& new_url) OVERRIDE;
 
  private:
   virtual brightray::BrowserMainParts* OverrideCreateBrowserMainParts(