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base/android/javatests/src/org/chromium/base/test/ScalableTimeout.java

Index: base/android/javatests/src/org/chromium/base/test/ScalableTimeout.java
diff --git a/base/android/javatests/src/org/chromium/base/test/ScalableTimeout.java b/base/android/javatests/src/org/chromium/base/test/ScalableTimeout.java
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index 0000000000000000000000000000000000000000..d502aaacbde2e6ee915da6c78635454260a17d09
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+++ b/base/android/javatests/src/org/chromium/base/test/ScalableTimeout.java
@@ -0,0 +1,28 @@
+// Copyright (c) 2012 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.test;
+
+/**
+ * Utility class for scaling various timeouts by a common factor.
+ * For example, to run tests under Valgrind, you might want the following:
+ *   adb shell "echo 20.0 > /data/local/tmp/chrome_timeout_scale"
+ */
+public class ScalableTimeout {
+    private static Double sTimeoutScale = null;
+    private static final String PROPERTY_FILE = "/data/local/tmp/chrome_timeout_scale";
+
+    public static long ScaleTimeout(long timeout) {
+        if (sTimeoutScale == null) {
+            try {
+                char[] data = TestFileUtil.readUtf8File(PROPERTY_FILE, 32);
+                sTimeoutScale = Double.parseDouble(new String(data));
+            } catch (Exception e) {
+                // NumberFormatException, FileNotFoundException, IOException
+                sTimeoutScale = 1.0;
+            }
+        }
+        return (long)(timeout * sTimeoutScale);
+    }
+}