crbug.com/127841 - Request Tablet Site on CB with touch screen.

chrome/browser/ui/toolbar/wrench_menu_model.cc

Index: chrome/browser/ui/toolbar/wrench_menu_model.cc
diff --git a/chrome/browser/ui/toolbar/wrench_menu_model.cc b/chrome/browser/ui/toolbar/wrench_menu_model.cc
index 45a5ba7e4a94ccc9e8f428ccd1c451c353e0f77a..7bcc09c0117bd47033c23482c47cf490f499927b 100644
--- a/chrome/browser/ui/toolbar/wrench_menu_model.cc
+++ b/chrome/browser/ui/toolbar/wrench_menu_model.cc
@@ -43,6 +43,7 @@
 #include "chrome/common/pref_names.h"
 #include "chrome/common/profiling.h"
 #include "content/public/browser/host_zoom_map.h"
+#include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
@@ -58,6 +59,10 @@
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_skia.h"
 
+#if defined(OS_CHROMEOS)
+#include "ui/base/touch/touch_factory.h"
+#endif
+
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #include "chrome/browser/ui/gtk/gtk_util.h"
@@ -362,6 +367,15 @@ bool WrenchMenuModel::IsCommandIdChecked(int command_id) const {
     return browser_->profile()->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar);
   } else if (command_id == IDC_PROFILING_ENABLED) {
     return Profiling::BeingProfiled();
+  } else if (command_id == IDC_TOGGLE_REQUEST_TABLET_SITE) {
+    WebContents* current_tab = chrome::GetActiveWebContents(browser_);
+    if (!current_tab)
+      return false;
+    content::NavigationEntry* entry =
+        current_tab->GetController().GetActiveEntry();
+    if (!entry)
+      return false;
+    return entry->GetIsOverridingUserAgent();
   }
 
   return false;
@@ -533,7 +547,24 @@ void WrenchMenuModel::Build() {
     AddSeparator(ui::NORMAL_SEPARATOR);
   }
 
-  AddItemWithStringId(IDC_OPTIONS, IDS_SETTINGS);
+  AddItemWithStringId(IDC_OPTIONS, IDS_SETTINGS);\
+
+#if defined(OS_CHROMEOS)
+  //  Note: on Chromebooks with default to "Desktop Site" even for
+  //        Chromebooks with a touch screen.
+  //        The following toggle lets the user switch to
+  //        "Tablet Site". This functionality is under two flags:
+  //          - to turn in on only for touch devices (intended use)
+  //          - to turn it on regardless of touch device (for testing)
+  bool enable_flag = CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableRequestTabletSite);
+  bool force_flag = CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableRequestTabletSiteEvenIfNonTouchDevice);
+  if (force_flag ||
+      (enable_flag && ui::TouchFactory::GetInstance()->IsTouchDevicePresent()))
+    AddCheckItemWithStringId(IDC_TOGGLE_REQUEST_TABLET_SITE,
+                             IDS_TOGGLE_REQUEST_TABLET_SITE);
+#endif
 
 // On ChromeOS-Touch, we don't want the about/background pages menu options.
 #if defined(OS_CHROMEOS)