Issue 32919: Update the Zoom NSMenuItems (Zoom-In/Zoom-out/Actual-Size) when the zoom state changes.

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 37da6f327e5dbc11213e05c12733f9415a7b088f..86bfd288f81087fdeb732f68e3a7a81c877cb867 100644
--- a/chrome/browser/ui/browser_commands.cc
+++ b/chrome/browser/ui/browser_commands.cc
@@ -578,6 +578,23 @@ void CloseTab(Browser* browser) {
   browser->tab_strip_model()->CloseSelectedTabs();
 }
 
+bool CanZoomIn(content::WebContents* contents) {
+  bool dummy = false;
+  return contents->GetZoomPercent(&dummy, &dummy) !=
+      contents->GetMaximumZoomPercent() + 1;
+}
+
+bool CanZoomOut(content::WebContents* contents) {
+  bool dummy = false;
+  return contents->GetZoomPercent(&dummy, &dummy) !=
+      contents->GetMinimumZoomPercent();
+}
+
+bool ActualSize(content::WebContents* contents) {
+  bool dummy = false;
+  return contents->GetZoomPercent(&dummy, &dummy) != 100.0f;
+}
+
 void RestoreTab(Browser* browser) {
   content::RecordAction(UserMetricsAction("RestoreTab"));
   TabRestoreService* service =