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 6f5e608d7e244f07a7c6e8f31456c952ba70add2..4798ecb571fb79c95032ba6319686b283f77476a 100644
--- a/chrome/browser/ui/toolbar/wrench_menu_model.cc
+++ b/chrome/browser/ui/toolbar/wrench_menu_model.cc
@@ -42,6 +42,7 @@
 #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"
@@ -54,6 +55,7 @@
 #include "ui/base/layout.h"
 #include "ui/base/models/button_menu_item_model.h"
 #include "ui/base/resource/resource_bundle.h"
+#include "ui/base/touch/touch_factory.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_skia.h"
 
@@ -361,6 +363,15 @@ 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;
@@ -505,6 +516,23 @@ void WrenchMenuModel::Build() {
 
   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
+
   if (!is_touch_menu) {
     AddItem(IDC_ABOUT, l10n_util::GetStringUTF16(IDS_ABOUT));
     string16 num_background_pages = base::FormatNumber(