Initialize compositor early on.

chrome/android/testshell/javatests/src/org/chromium/chrome/testshell/ChromiumTestShellUrlTest.java

 // 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.chrome.testshell;
 
 import android.test.suitebuilder.annotation.SmallTest;
 
 import org.chromium.base.test.util.Feature;
+import org.chromium.content.browser.ContentViewRenderView;
 
 public class ChromiumTestShellUrlTest extends ChromiumTestShellTestBase {
     // URL used for base tests.
     private static final String URL = "data:text";
 
     @SmallTest
     @Feature({"Main"})
     public void testBaseStartup() throws Exception {
         ChromiumTestShellActivity activity = launchChromiumTestShellWithUrl(URL);
         waitForActiveShellToBeDoneLoading();
 
         // Make sure the activity was created as expected.
         assertNotNull(activity);
     }
+
+    /**
+     * Tests that creating an extra ContentViewRenderView does not cause an assert because we would
+     * initialize the compositor twice http://crbug.com/162312
+     */
+    @SmallTest
+    @Feature({"Main"})
+    public void testCompositorInit() throws Exception {
+        // Start the ChromiumTestShell, this loads the native library and create an instance of
+        // ContentViewRenderView.
+        final ChromiumTestShellActivity activity = launchChromiumTestShellWithUrl(URL);
+        waitForActiveShellToBeDoneLoading();
+
+        // Now create a new ContentViewRenderView, it should not assert.
+        try {
+            runTestOnUiThread(new Runnable() {
+                @Override
+                public void run() {
+                    ContentViewRenderView contentViewRenderView =
+                            new ContentViewRenderView(getInstrumentation().getTargetContext());
+                    contentViewRenderView.setCurrentContentView(activity.getActiveContentView());
+                }
+            });
+        } catch (Throwable e) {
+            fail("Could not create a ContentViewRenderView: " + e);
+        }
+    }
 }