Rework the device management backend implementation.

chrome/browser/profile.h

Index: chrome/browser/profile.h
diff --git a/chrome/browser/profile.h b/chrome/browser/profile.h
index f2accbf6b62573f90b0626e821625822c746bd69..b373faf3bcec59a520c1c08a29f41a088ccdd3dc 100644
--- a/chrome/browser/profile.h
+++ b/chrome/browser/profile.h
@@ -30,6 +30,11 @@ class TransportSecurityState;
 class SSLConfigService;
 }
 
+namespace policy {
+class DeviceManagementService;
+class DeviceManagementPolicyProvider;
+}
+
 namespace webkit_database {
 class DatabaseTracker;
 }
@@ -472,6 +477,13 @@ class Profile {
   // Returns the PromoCounter for Instant, or NULL if not applicable.
   virtual PromoCounter* GetInstantPromoCounter() = 0;
 
+  // Gets the device management service associated with this profile.
+  virtual policy::DeviceManagementService* GetDeviceManagementService() = 0;
+
+  // Get the device management policy provider for this profile.
+  virtual policy::DeviceManagementPolicyProvider*
+      GetDeviceManagementPolicyProvider() = 0;
+
 #if defined(OS_CHROMEOS)
   // Returns ChromeOS's ProxyConfigServiceImpl, creating if not yet created.
   virtual chromeos::ProxyConfigServiceImpl*