Implement GetFactoryLocaleList() using AThings Factory API.

Bug: b/79936337
Bug: b/111880157
Test: Install APK on device and verify via logcat
Change-Id: I51a0a34540de6e21f4a8dc5abb4e75d58f8fe4cf
Merge-With: eureka-internal/205878
Reviewed-on: https://chromium-review.googlesource.com/c/1259611
Commit-Queue: Akira Baruah <akirabaruah@chromium.org>
Reviewed-by: Simeon Anfinrud <sanfin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601320}

chromecast/base/cast_sys_info_android_things.cc

@@ -7,6 +7,7 @@
 #include "base/android/jni_string.h"
 #include "chromecast/chromecast_buildflags.h"
 #if BUILDFLAG(IS_ANDROID_THINGS_NON_PUBLIC)
+#include "base/android/jni_array.h"
 #include "jni/CastSysInfoAndroidThings_jni.h"
 #endif
 
@@ -55,4 +56,16 @@ std::string CastSysInfoAndroidThings::GetSystemReleaseChannel() {
 #endif
 }
 
+// static
+std::vector<std::string> CastSysInfo::GetFactoryLocaleList() {
+  std::vector<std::string> locale_list;
+#if BUILDFLAG(IS_ANDROID_THINGS_NON_PUBLIC)
+  JNIEnv* env = base::android::AttachCurrentThread();
+  base::android::AppendJavaStringArrayToStringVector(
+      env, Java_CastSysInfoAndroidThings_getFactoryLocaleList(env).obj(),
+      &locale_list);
+#endif
+  return locale_list;
+}
+
 }  // namespace chromecast

chromecast/browser/android/apk/src/org/chromium/chromecast/shell/CastSysInfoAndroidThings.java

@@ -5,16 +5,27 @@
 package org.chromium.chromecast.shell;
 
 import com.google.android.things.AndroidThings;
+import com.google.android.things.factory.FactoryDataManager;
 import com.google.android.things.update.UpdateManager;
 
+import org.chromium.base.Log;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+
 /**
  * Java implementation of CastSysInfoAndroidThings methods.
  */
 @JNINamespace("chromecast")
 public final class CastSysInfoAndroidThings {
+    private static final String TAG = "CastSysInfoAndroidThings";
+    private static final String FACTORY_LOCALE_LIST_FILE = "locale_list.txt";
+
     @CalledByNative
     private static String getProductName() {
         return AndroidThings.Product.NAME;
@@ -34,4 +45,24 @@ public final class CastSysInfoAndroidThings {
     private static String getReleaseChannel() {
         return UpdateManager.getInstance().getChannel();
     }
+
+    @CalledByNative
+    private static String[] getFactoryLocaleList() {
+        ArrayList<String> locale_list = new ArrayList<String>();
+        try {
+            FactoryDataManager factoryManager = FactoryDataManager.getInstance();
+            try (InputStream input = factoryManager.openFile(FACTORY_LOCALE_LIST_FILE);
+                    BufferedReader reader = new BufferedReader(new InputStreamReader(input))) {
+                for (String line = reader.readLine(); line != null; line = reader.readLine()) {
+                    locale_list.add(line);
+                }
+            }
+        } catch (IllegalStateException e) {
+            Log.e(TAG, "Failed to connect to FactoryDataService", e);
+        } catch (IllegalArgumentException | IOException e) {
+            Log.w(TAG, "Factory file %s doesn't exist or can't be opened.",
+                    FACTORY_LOCALE_LIST_FILE, e);
+        }
+        return locale_list.toArray(new String[locale_list.size()]);
+    }
 }