dart:io | Make FileStat.stat throw an exception when the file does not exist, or cannot be accessed.

runtime/bin/file_android.cc

Index: runtime/bin/file_android.cc
diff --git a/runtime/bin/file_android.cc b/runtime/bin/file_android.cc
index ba7ac88b8df46632fbb18570ee95a9cfc6b26a3d..939929a90a78bff1d2edcdb4249412135aa005f2 100644
--- a/runtime/bin/file_android.cc
+++ b/runtime/bin/file_android.cc
@@ -220,11 +220,6 @@ void File::Stat(const char* name, int64_t* data) {
     data[kSize] = st.st_size;
   } else {
     data[kType] = kDoesNotExist;
-    data[kCreatedTime] = 0;
-    data[kModifiedTime] = 0;
-    data[kAccessedTime] = 0;
-    data[kMode] = 0;
-    data[kSize] = 0;
   }
 }