[Android][ChildAccount] Remove unused method in ChildAccountService

This CL removes the unused method in ChildAccountService. The method
was added before 2015.

Bug: 1161702
Change-Id: I7b6596b987a8b8b1203041a6fde138d8f92b1351
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2612997Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Commit-Queue: Alice Wang <aliceywang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841027}

chrome/android/java/src/org/chromium/chrome/browser/childaccounts/ChildAccountService.java

@@ -55,14 +55,6 @@ public class ChildAccountService {
         });
     }
 
-    /**
-     * Set a callback to be called the next time a child account status change is received
-     * @param callback the callback to be called when the status changes.
-     */
-    public static void listenForStatusChange(Callback<Boolean> callback) {
-        ChildAccountServiceJni.get().listenForChildStatusReceived(callback);
-    }
-
     @CalledByNative
     private static void reauthenticateChildAccount(
             WindowAndroid windowAndroid, String accountName, final long nativeCallback) {
@@ -85,7 +77,6 @@ public class ChildAccountService {
 
     @NativeMethods
     interface Natives {
-        void listenForChildStatusReceived(Callback<Boolean> callback);
         void onReauthenticationResult(long callbackPtr, boolean reauthSuccessful);
     }
 }

chrome/browser/supervised_user/child_accounts/child_account_service_android.cc

@@ -11,9 +11,7 @@
 #include "base/bind.h"
 #include "chrome/android/chrome_jni_headers/ChildAccountService_jni.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 "content/public/browser/web_contents.h"
 #include "ui/android/window_android.h"
 
@@ -24,17 +22,6 @@ using base::android::JavaRef;
 using base::android::RunBooleanCallbackAndroid;
 using base::android::ScopedJavaGlobalRef;
 
-void JNI_ChildAccountService_ListenForChildStatusReceived(
-    JNIEnv* env,
-    const JavaParamRef<jobject>& callback) {
-  ProfileManager* profile_manager = g_browser_process->profile_manager();
-  ChildAccountService* service = ChildAccountServiceFactory::GetForProfile(
-      profile_manager->GetLastUsedProfile());
-  service->AddChildStatusReceivedCallback(
-      base::BindOnce(&RunBooleanCallbackAndroid,
-                     ScopedJavaGlobalRef<jobject>(callback), true));
-}
-
 void ReauthenticateChildAccount(
     content::WebContents* web_contents,
     const std::string& email,