Add UI in Aura for distilling web pages and update Chrome Shell.

chrome/browser/ui/browser_commands.cc

Index: chrome/browser/ui/browser_commands.cc
diff --git a/chrome/browser/ui/browser_commands.cc b/chrome/browser/ui/browser_commands.cc
index d697163f09f378d90465b56d7c09f0fd4dc6d12e..e2225bac044e306c1e8450572c8abddec57518b6 100644
--- a/chrome/browser/ui/browser_commands.cc
+++ b/chrome/browser/ui/browser_commands.cc
@@ -16,6 +16,7 @@
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chrome_page_zoom.h"
 #include "chrome/browser/devtools/devtools_window.h"
+#include "chrome/browser/dom_distiller/tab_utils.h"
 #include "chrome/browser/extensions/api/commands/command_service.h"
 #include "chrome/browser/extensions/tab_helper.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
@@ -1072,6 +1073,10 @@ void ToggleSpeechInput(Browser* browser) {
     search_tab_helper->ToggleVoiceSearch();
 }
 
+void DistillCurrentPage(Browser* browser) {
+  DistillCurrentPageAndView(browser->tab_strip_model()->GetActiveWebContents());
+}
+
 bool CanRequestTabletSite(WebContents* current_tab) {
   if (!current_tab)
     return false;