Move IsRunningOnChromeOS to base/chromeos

chrome/browser/chrome_browser_main_extra_parts_ash.cc

Index: chrome/browser/chrome_browser_main_extra_parts_ash.cc
diff --git a/chrome/browser/chrome_browser_main_extra_parts_ash.cc b/chrome/browser/chrome_browser_main_extra_parts_ash.cc
index 22dc56588c8c02df05183a17ef856519e19cf45d..563adb14d3e568672da23a582185c87540b76070 100644
--- a/chrome/browser/chrome_browser_main_extra_parts_ash.cc
+++ b/chrome/browser/chrome_browser_main_extra_parts_ash.cc
@@ -20,12 +20,12 @@
 #include "ui/gfx/compositor/compositor_setup.h"
 
 #if defined(OS_CHROMEOS)
+#include "base/chromeos/chromeos_version.h"
 #include "chrome/browser/ui/views/ash/brightness_controller_chromeos.h"
 #include "chrome/browser/ui/views/ash/ime_controller_chromeos.h"
 #include "chrome/browser/ui/views/ash/volume_controller_chromeos.h"
 #include "chrome/browser/chromeos/input_method/input_method_manager.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
-#include "chrome/browser/chromeos/system/runtime_environment.h"
 #endif
 
 ChromeBrowserMainExtraPartsAsh::ChromeBrowserMainExtraPartsAsh()
@@ -34,7 +34,7 @@ ChromeBrowserMainExtraPartsAsh::ChromeBrowserMainExtraPartsAsh()
 
 void ChromeBrowserMainExtraPartsAsh::PreProfileInit() {
 #if defined(OS_CHROMEOS)
-  if (chromeos::system::runtime_environment::IsRunningOnChromeOS() ||
+  if (base::chromeos::IsRunningOnChromeOS() ||
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kAuraHostWindowUseFullscreen)) {
     aura::RootWindow::set_use_fullscreen_host_window(true);