android: Improve ActivityStatus and add ChromiumActivity.

content/public/android/javatests/src/org/chromium/content/browser/LocationProviderTest.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.content.browser;
 
 import android.test.UiThreadTest;
 import android.test.InstrumentationTestCase;
 import android.test.suitebuilder.annotation.SmallTest;
 
@@ skipping 42 matching lines @@
     /**
      * Verify that pausing the activity stops location listener and when
      * activity resumes it restarts listening.
      */
     @SmallTest
     @UiThreadTest
     @Feature({"Location"})
     public void testStartPauseResumeStop() throws Exception {
         mLocationProvider.start(false);
         assertTrue("Should be running", mLocationProvider.isRunning());
-        ActivityStatus.getInstance().onPause();
+        ActivityStatus.onStateChange(null, ActivityStatus.PAUSED);
         assertFalse("Should have paused", mLocationProvider.isRunning());
-        ActivityStatus.getInstance().onResume();
+        ActivityStatus.onStateChange(null, ActivityStatus.RESUMED);
         assertTrue("Should have resumed", mLocationProvider.isRunning());
         mLocationProvider.stop();
         assertFalse("Should have stopped", mLocationProvider.isRunning());
     }
 
     /**
      * Verify that calling start when the activity is paused doesn't start listening
      * for location updates until activity resumes.
      */
     @SmallTest
     @UiThreadTest
     @Feature({"Location"})
     public void testPauseStartResumeStop() throws Exception {
-        ActivityStatus.getInstance().onPause();
+        ActivityStatus.onStateChange(null, ActivityStatus.PAUSED);
         mLocationProvider.start(false);
         assertFalse("Should not be running", mLocationProvider.isRunning());
-        ActivityStatus.getInstance().onResume();
+        ActivityStatus.onStateChange(null, ActivityStatus.RESUMED);
         assertTrue("Should have resumed", mLocationProvider.isRunning());
         mLocationProvider.stop();
         assertFalse("Should have stopped", mLocationProvider.isRunning());
     }
 
     /**
      * Verify that upgrading when paused works as expected.
      */
     @SmallTest
     @UiThreadTest
     @Feature({"Location"})
     public void testStartPauseUpgradeResumeStop() throws Exception {
         mLocationProvider.start(false);
         assertTrue("Should be running", mLocationProvider.isRunning());
-        ActivityStatus.getInstance().onPause();
+        ActivityStatus.onStateChange(null, ActivityStatus.PAUSED);
         assertFalse("Should have paused", mLocationProvider.isRunning());
         mLocationProvider.start(true);
         assertFalse("Should be paused", mLocationProvider.isRunning());
-        ActivityStatus.getInstance().onResume();
+        ActivityStatus.onStateChange(null, ActivityStatus.RESUMED);
         assertTrue("Should have resumed", mLocationProvider.isRunning());
         mLocationProvider.stop();
         assertFalse("Should have stopped", mLocationProvider.isRunning());
     }
 }