Correctly check if a directory exists am: d282252007 am: 59583bb7f4 am: 2aa44b62c5 am: 33a6c03a16 am: 8a37a31fbe

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1356903

Change-Id: I834b4e9c4dc64389ca5e2caa8a38d5d1e0b526b6
diff --git a/hardware_android.cc b/hardware_android.cc
index ac6cf16..0bf05e4 100644
--- a/hardware_android.cc
+++ b/hardware_android.cc
@@ -181,7 +181,7 @@
 
 bool HardwareAndroid::GetNonVolatileDirectory(base::FilePath* path) const {
   base::FilePath local_path(constants::kNonVolatileDirectory);
-  if (!base::PathExists(local_path)) {
+  if (!base::DirectoryExists(local_path)) {
     LOG(ERROR) << "Non-volatile directory not found: " << local_path.value();
     return false;
   }