Implement ScreenOrientationProvider for Chrome Android.

content/public/test/android/javatests/src/org/chromium/content/browser/test/util/MockOrientationObserver.java

Index: content/public/test/android/javatests/src/org/chromium/content/browser/test/util/MockOrientationObserver.java
diff --git a/content/public/test/android/javatests/src/org/chromium/content/browser/test/util/MockOrientationObserver.java b/content/public/test/android/javatests/src/org/chromium/content/browser/test/util/MockOrientationObserver.java
new file mode 100644
index 0000000000000000000000000000000000000000..eaaa3e65f82391214fb47286a6c34daae7c9589a
--- /dev/null
+++ b/content/public/test/android/javatests/src/org/chromium/content/browser/test/util/MockOrientationObserver.java
@@ -0,0 +1,22 @@
+// Copyright 2014 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.content.browser.test.util;
+
+import org.chromium.content.browser.ScreenOrientationListener.ScreenOrientationObserver;
+
+/**
+ * Mock of an OrientationObserver for tests that need to observe ScreenOrientation changes.
+ */
+public class MockOrientationObserver implements ScreenOrientationObserver {
+
+    public int mOrientation = -1;
+    public boolean mHasChanged = false;
+
+    @Override
+    public void onScreenOrientationChanged(int orientation) {
+        mOrientation = orientation;
+        mHasChanged = true;
+    }
+}