[Webview, Child Accounts] Automatically sign in to Chrome if needed.

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 0cf6c7ac3b23ec9ec3f849124791ec79d03b4408..016b82acd9731959be65b7a65dd0ba372d0ac293 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
@@ -4,12 +4,19 @@
 
 #include "chrome/browser/supervised_user/child_accounts/child_account_service_android.h"
 
+#include "base/android/callback_android.h"
+#include "base/bind.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"
 #include "jni/ChildAccountService_jni.h"
 
 using base::android::JavaParamRef;
+using base::android::JavaRef;
+using base::android::RunCallbackAndroid;
+using base::android::ScopedJavaGlobalRef;
 
 jboolean IsChildAccount(JNIEnv* env, const JavaParamRef<jclass>& jcaller) {
   ProfileManager* profile_manager = g_browser_process->profile_manager();
@@ -19,3 +26,17 @@ jboolean IsChildAccount(JNIEnv* env, const JavaParamRef<jclass>& jcaller) {
 bool RegisterChildAccountService(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
+
+void ListenForChildStatusReceived(JNIEnv* env,
+                                  const JavaParamRef<jclass>& jcaller,
+                                  const JavaParamRef<jobject>& callback) {
+  ProfileManager* profile_manager = g_browser_process->profile_manager();
+  ChildAccountService* service = ChildAccountServiceFactory::GetForProfile(
+      profile_manager->GetLastUsedProfile());
+  // Needed to disambiguate RunCallbackAndroid
+  void (*runCallback)(const JavaRef<jobject>&, bool) = &RunCallbackAndroid;
+  // TODO(https://crbug.com/692591) Should use base::BindOnce, but
+  // AddChildStatusReceivedCallback won't yet accept a BindOnce.
+  service->AddChildStatusReceivedCallback(
+      base::Bind(runCallback, ScopedJavaGlobalRef<jobject>(callback), true));
+}