Fix up _some_web app directory StrictMode violations

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

Index: base/android/java/src/org/chromium/base/FileUtilities.java
diff --git a/base/android/java/src/org/chromium/base/FileUtilities.java b/base/android/java/src/org/chromium/base/FileUtilities.java
new file mode 100644
index 0000000000000000000000000000000000000000..a09f362ff520917fb3299bb6a12ed91312dcc966
--- /dev/null
+++ b/base/android/java/src/org/chromium/base/FileUtilities.java
@@ -0,0 +1,34 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.base;
+
+import java.io.File;
+
+/**
+ * Helper methods for dealing with Files.
+ */
+public class FileUtilities {

[Lalit Maganti, 2015/09/22 17:21:58]

Out of curiousity: why Utilities in full? In Java (and Chrome) the convention is
to use Util/Utils

[gone, 2015/09/22 18:49:56]

Former internal repo wonkiness... Renamed this one to FileUtils for base
consistency.

+    private static final String TAG = "FileUtilities";
+
+    /**
+     * Delete the given File and (if it's a directory) everything within it.
+     */
+    public static void recursivelyDeleteFile(File currentFile) {
+        if (currentFile.isDirectory()) {
+            File[] files = currentFile.listFiles();
+            if (files != null) {
+                for (File file : files) {
+                    recursivelyDeleteFile(file);
+                }
+            }
+        }
+
+        try {
+            if (!currentFile.delete()) Log.e(TAG, "Failed to delete: " + currentFile);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Hit SecurityException when trying to delete: " + currentFile, e);
+        }
+    }
+}