Setup download internal directory

base/android/java/src/org/chromium/base/PathUtils.java

Index: base/android/java/src/org/chromium/base/PathUtils.java
diff --git a/base/android/java/src/org/chromium/base/PathUtils.java b/base/android/java/src/org/chromium/base/PathUtils.java
index 00977d56d576ac94335c6ab0578a86c75b1c2833..1cadb250ac033d231912f13cde31885362f99a41 100644
--- a/base/android/java/src/org/chromium/base/PathUtils.java
+++ b/base/android/java/src/org/chromium/base/PathUtils.java
@@ -25,12 +25,14 @@ import java.util.concurrent.atomic.AtomicBoolean;
 @MainDex
 public abstract class PathUtils {
     private static final String THUMBNAIL_DIRECTORY_NAME = "textures";
+    private static final String DOWNLOAD_INTERNAL_DIRECTORY_NAME = "download_internal";
 
     private static final int DATA_DIRECTORY = 0;
     private static final int THUMBNAIL_DIRECTORY = 1;
     private static final int DATABASE_DIRECTORY = 2;
     private static final int CACHE_DIRECTORY = 3;
-    private static final int NUM_DIRECTORIES = 4;
+    private static final int DOWNLOAD_INTERNAL_DIRECTORY = 4;
+    private static final int NUM_DIRECTORIES = 5;
     private static final AtomicBoolean sInitializationStarted = new AtomicBoolean();
     private static AsyncTask<Void, Void, String[]> sDirPathFetchTask;
 
@@ -102,6 +104,8 @@ public abstract class PathUtils {
                 sDataDirectorySuffix, Context.MODE_PRIVATE).getPath();
         paths[THUMBNAIL_DIRECTORY] = appContext.getDir(
                 THUMBNAIL_DIRECTORY_NAME, Context.MODE_PRIVATE).getPath();
+        paths[DOWNLOAD_INTERNAL_DIRECTORY] =
+                appContext.getDir(DOWNLOAD_INTERNAL_DIRECTORY_NAME, Context.MODE_PRIVATE).getPath();
         paths[DATABASE_DIRECTORY] = appContext.getDatabasePath("foo").getParent();
         if (appContext.getCacheDir() != null) {
             paths[CACHE_DIRECTORY] = appContext.getCacheDir().getPath();
@@ -177,6 +181,12 @@ public abstract class PathUtils {
         return getDirectoryPath(THUMBNAIL_DIRECTORY);
     }
 
+    @CalledByNative
+    public static String getDownloadInternalDirectory() {
+        assert sDirPathFetchTask != null : "setDataDirectorySuffix must be called first.";
+        return getDirectoryPath(DOWNLOAD_INTERNAL_DIRECTORY);
+    }
+
     /**
      * @return the public downloads directory.
      */