Create chrome://device-emulator and add the ability to get a battery percentage and send an updated…

chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc

Index: chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
diff --git a/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc b/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
index f6d062fdd1cf2b249d880faeb4cc74caf0d2b7cf..0a21c88622f4f75ec25de7ae6c105a4b1244b2d8 100644
--- a/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
+++ b/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
@@ -114,11 +114,13 @@
 #endif
 
 #if defined(OS_CHROMEOS)
+#include "base/sys_info.h"
 #include "chrome/browser/ui/webui/chromeos/bluetooth_pairing_ui.h"
 #include "chrome/browser/ui/webui/chromeos/certificate_manager_dialog_ui.h"
 #include "chrome/browser/ui/webui/chromeos/choose_mobile_network_ui.h"
 #include "chrome/browser/ui/webui/chromeos/cryptohome_ui.h"
 #include "chrome/browser/ui/webui/chromeos/drive_internals_ui.h"
+#include "chrome/browser/ui/webui/chromeos/emulator/device_emulator_ui.h"
 #include "chrome/browser/ui/webui/chromeos/first_run/first_run_ui.h"
 #include "chrome/browser/ui/webui/chromeos/imageburner/imageburner_ui.h"
 #include "chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.h"
@@ -437,6 +439,10 @@ WebUIFactoryFunction GetWebUIFactoryFunction(WebUI* web_ui,
     return &NewWebUI<chromeos::ChooseMobileNetworkUI>;
   if (url.host() == chrome::kChromeUICryptohomeHost)
     return &NewWebUI<chromeos::CryptohomeUI>;
+  if (!base::SysInfo::IsRunningOnChromeOS()) {
+    if (url.host() == chrome::kChromeUIDeviceEmulatorHost)
+      return &NewWebUI<DeviceEmulatorUI>;
+  }
   if (url.host() == chrome::kChromeUIDriveInternalsHost)
     return &NewWebUI<chromeos::DriveInternalsUI>;
   if (url.host() == chrome::kChromeUIImageBurnerHost)