Invoke setup.exe to reenable updates when the update bubble is clicked.

chrome/browser/ui/views/outdated_upgrade_bubble_view.cc

Index: chrome/browser/ui/views/outdated_upgrade_bubble_view.cc
diff --git a/chrome/browser/ui/views/outdated_upgrade_bubble_view.cc b/chrome/browser/ui/views/outdated_upgrade_bubble_view.cc
index fcb1ebb162241af85ccf64be749a00a8525e2fbc..dbb3d815770a05849940b0ad8a5ef4bb1dfd41d5 100644
--- a/chrome/browser/ui/views/outdated_upgrade_bubble_view.cc
+++ b/chrome/browser/ui/views/outdated_upgrade_bubble_view.cc
@@ -14,6 +14,8 @@
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/upgrade_detector.h"
 #include "chrome/common/pref_names.h"
+#include "chrome/installer/util/google_update_util.h"
+#include "content/public/browser/browser_thread.h"
 #include "content/public/browser/page_navigator.h"
 #include "content/public/browser/user_metrics.h"
 #include "grit/chromium_strings.h"
@@ -36,6 +38,7 @@
 #include "ui/gfx/icon_util.h"
 #endif
 
+using content::BrowserThread;
 using views::GridLayout;
 
 namespace {
@@ -94,6 +97,10 @@ void AddElevationIconIfNeeded(views::LabelButton* button) {
 #endif
 }
 
+void ReenableUpdates() {
+  google_update::ElevateIfNeededToReenableUpdates();
+}
+
 }  // namespace
 
 // OutdatedUpgradeBubbleView ---------------------------------------------------
@@ -262,12 +269,15 @@ void OutdatedUpgradeBubbleView::HandleButtonPressed(views::Button* sender) {
           0, kMaxIgnored, kNumIgnoredBuckets);
       content::RecordAction(
           base::UserMetricsAction("OutdatedUpgradeBubble.EnableAU"));
-      // TODO(robertshield): Make a call to GoogleUpdateSettings to enable
-      // auto-update.
+      // Record that the autoupdate flavour of the dialog has been shown.
       if (g_browser_process->local_state()) {
         g_browser_process->local_state()->SetBoolean(
             prefs::kAttemptedToEnableAutoupdate, true);
       }
+
+      // Re-enable updates by shelling out to setup.exe on the file thread.
+      BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
+                              base::Bind(&ReenableUpdates));

[MAD, 2014/03/28 18:18:23]

You were not able to Bind directly to
google_update::ElevateIfNeededToReenableUpdates()?

[robertshield, 2014/03/28 19:15:35]

Done.

     }
   } else {
     DCHECK_EQ(later_button_, sender);