Fix StackOverFlow in AdvancedMockContext.

base/android/javatests/src/org/chromium/base/AdvancedMockContextTest.java

Index: base/android/javatests/src/org/chromium/base/AdvancedMockContextTest.java
diff --git a/base/android/javatests/src/org/chromium/base/AdvancedMockContextTest.java b/base/android/javatests/src/org/chromium/base/AdvancedMockContextTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..d7c103b95beab920ae975db746d8f33b46d5ef57
--- /dev/null
+++ b/base/android/javatests/src/org/chromium/base/AdvancedMockContextTest.java
@@ -0,0 +1,68 @@
+// 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.base;
+
+import android.app.Application;
+import android.content.ComponentCallbacks;
+import android.content.ComponentCallbacks2;
+import android.content.Context;
+import android.content.res.Configuration;
+import android.test.InstrumentationTestCase;
+
+import org.chromium.base.test.util.AdvancedMockContext;
+
+/**
+ * Tests for {@link org.chromium.base.test.util.AdvancedMockContext}.
+ */
+public class AdvancedMockContextTest extends InstrumentationTestCase {
+    private static class Callback1 implements ComponentCallbacks {
+        protected Configuration mConfiguration;
+        protected boolean mOnLowMemoryCalled;
+
+        @Override
+        public void onConfigurationChanged(Configuration configuration) {
+            mConfiguration = configuration;
+        }
+
+        @Override
+        public void onLowMemory() {
+            mOnLowMemoryCalled = true;
+        }
+    }
+
+    private static class Callback2 extends Callback1 implements ComponentCallbacks2 {
+        private int mLevel;
+
+        @Override
+        public void onTrimMemory(int level) {
+            mLevel = level;
+        }
+    }
+
+    public void testComponentCallbacksForTargetContext() {
+        Context targetContext = getInstrumentation().getTargetContext();
+        Application targetApplication = (Application) targetContext.getApplicationContext();
+        AdvancedMockContext context = new AdvancedMockContext(targetContext);
+        Callback1 callback1 = new Callback1();
+        Callback2 callback2 = new Callback2();
+        context.registerComponentCallbacks(callback1);
+        context.registerComponentCallbacks(callback2);
+
+        targetApplication.onLowMemory();
+        assertTrue("onLowMemory should have been called.", callback1.mOnLowMemoryCalled);
+        assertTrue("onLowMemory should have been called.", callback2.mOnLowMemoryCalled);
+
+        Configuration configuration = new Configuration();
+        targetApplication.onConfigurationChanged(configuration);
+        assertEquals("onConfigurationChanged should have been called.", configuration,
+                callback1.mConfiguration);
+        assertEquals("onConfigurationChanged should have been called.", configuration,
+                callback2.mConfiguration);
+
+        targetApplication.onTrimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE);
+        assertEquals("onTrimMemory should have been called.", ComponentCallbacks2
+                .TRIM_MEMORY_MODERATE, callback2.mLevel);
+    }
+}