Setup download internal directory

base/android/path_utils.cc

Index: base/android/path_utils.cc
diff --git a/base/android/path_utils.cc b/base/android/path_utils.cc
index 89ab8333ab1a71de5c72fd1405fbe53df3775272..c4aa4198a834ada793cb2badfd9e12e75b896777 100644
--- a/base/android/path_utils.cc
+++ b/base/android/path_utils.cc
@@ -48,6 +48,15 @@ bool GetThumbnailCacheDirectory(FilePath* result) {
   return true;
 }
 
+bool GetDownloadInternalDirectory(FilePath* result) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> path =
+      Java_PathUtils_getDownloadInternalDirectory(env);
+  FilePath download_internal_path(ConvertJavaStringToUTF8(path));
+  *result = download_internal_path;
+  return true;
+}
+
 bool GetDownloadsDirectory(FilePath* result) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jstring> path = Java_PathUtils_getDownloadsDirectory(env);