Map fullscreen button to maximize

chrome/browser/ui/ash/chrome_shell_delegate.cc

Index: chrome/browser/ui/ash/chrome_shell_delegate.cc
diff --git a/chrome/browser/ui/ash/chrome_shell_delegate.cc b/chrome/browser/ui/ash/chrome_shell_delegate.cc
index 2a44a9e01a4b6929665de6041c924057f1f57a46..798ab4690f19a28e964c34e71214e7cd9f4a0790 100644
--- a/chrome/browser/ui/ash/chrome_shell_delegate.cc
+++ b/chrome/browser/ui/ash/chrome_shell_delegate.cc
@@ -24,6 +24,7 @@
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
 #include "chrome/browser/ui/webui/chrome_web_contents_handler.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
@@ -349,6 +350,10 @@ void ChromeShellDelegate::OpenFeedbackPage() {
 void ChromeShellDelegate::RecordUserMetricsAction(
     ash::UserMetricsAction action) {
   switch (action) {
+    case ash::UMA_ACCEL_MAXIMIZE_RESTORE:
+      content::RecordAction(
+          content::UserMetricsAction("Accel_Maximize_Restore_F4"));
+      break;
     case ash::UMA_ACCEL_PREVWINDOW_TAB:
       content::RecordAction(content::UserMetricsAction("Accel_PrevWindow_Tab"));
       break;
@@ -405,6 +410,17 @@ string16 ChromeShellDelegate::GetTimeRemainingString(base::TimeDelta delta) {
   return TimeFormat::TimeRemaining(delta);
 }
 
+void ChromeShellDelegate::ToggleFullscreenMode() {
+  Browser* browser = GetTargetBrowser();
+  if (!browser)
+    return;
+  FullscreenController* fullscreen_controller =
+      browser->fullscreen_controller();
+  if (!fullscreen_controller)
+    return;
+  fullscreen_controller->ToggleFullscreenMode();
+}
+
 void ChromeShellDelegate::Observe(int type,
                                   const content::NotificationSource& source,
                                   const content::NotificationDetails& details) {