Clean up ProfileManager interface.

chrome/browser/supervised_user/child_accounts/child_account_service_android.cc

Index: chrome/browser/supervised_user/child_accounts/child_account_service_android.cc
diff --git a/chrome/browser/supervised_user/child_accounts/child_account_service_android.cc b/chrome/browser/supervised_user/child_accounts/child_account_service_android.cc
index 8b7c5af28bbd77c8e765a134a151e847ceeb6b18..fd915b141f519e0cd949c2a639c40dca71696b8f 100644
--- a/chrome/browser/supervised_user/child_accounts/child_account_service_android.cc
+++ b/chrome/browser/supervised_user/child_accounts/child_account_service_android.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/supervised_user/child_accounts/child_account_service_android.h"
 
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/supervised_user/child_accounts/child_account_service.h"
 #include "chrome/browser/supervised_user/child_accounts/child_account_service_factory.h"
@@ -16,7 +17,7 @@ jboolean IsChildAccountDetectionEnabled(JNIEnv* env, jobject obj) {
 void OnChildAccountSigninComplete(JNIEnv* env, jobject obj) {
   VLOG(1) << "OnChildAccountSigninComplete";
 
-  Profile* profile = ProfileManager::GetLastUsedProfile();
+  Profile* profile = g_browser_process->profile_manager()->GetLastUsedProfile();
   ChildAccountServiceFactory::GetForProfile(profile)->SetIsChildAccount(true);
 }