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..ce47341cceb5bc9b399b2c4f8e82515258cb858e 100644
--- a/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
+++ b/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
@@ -119,6 +119,7 @@
 #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 +438,8 @@ WebUIFactoryFunction GetWebUIFactoryFunction(WebUI* web_ui,
     return &NewWebUI<chromeos::ChooseMobileNetworkUI>;
   if (url.host() == chrome::kChromeUICryptohomeHost)
     return &NewWebUI<chromeos::CryptohomeUI>;

[oshima, 2015/06/24 22:33:55]

Can you enable this only when running on Linux Desktop? You can use 

https://code.google.com/p/chromium/codesearch#chromium/src/base/sys_info.h&l=118

[rfrappier, 2015/06/24 23:22:27]

So I basically just need to check 

if (!IsRunningOnChromeOS)?

+  if (url.host() == chrome::kChromeUIDeviceEmulatorHost)
+    return &NewWebUI<chromeos::DeviceEmulatorUI>;
   if (url.host() == chrome::kChromeUIDriveInternalsHost)
     return &NewWebUI<chromeos::DriveInternalsUI>;
   if (url.host() == chrome::kChromeUIImageBurnerHost)