android: Improve ActivityStatus and add ChromiumActivity.

The ActivityStatus class used to track activity state changes is too basic
for some usage scenarios.

This patch does the following:

- Augment ActivityStatus with a new StateListener type that can be
  registered to listen to all activity state changes.

  Also add getActivity(), getState(), registerStateListener()
  and unregisterStateListener() as static method.

- Add a new ChromiumActivity class that all Chromium main activities
  should sub-class, to ensure that the ActivityStatus state is updated
  appropriately.

- Modify all main activities in the Chromium code base to extend
  from ChromiumActivity instead of Activity.

BUG=none


Review URL: https://chromiumcodereview.appspot.com/11419287

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@171789 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 1 deletions

diff --git a/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java b/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java
index 77022506..fef3dce 100644
--- a/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java
+++ b/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java
@@ -11,6 +11,7 @@ import android.os.Environment;
 import android.os.Handler;
 import android.util.Log;
 
+import org.chromium.base.ChromiumActivity;
 import org.chromium.base.PathUtils;
 import org.chromium.base.SystemMonitor;
 
@@ -19,7 +20,7 @@ import java.io.File;
 // Android's NativeActivity is mostly useful for pure-native code.
 // Our tests need to go up to our own java classes, which is not possible using
 // the native activity class loader.
-public class ChromeNativeTestActivity extends Activity {
+public class ChromeNativeTestActivity extends ChromiumActivity {
     private final String TAG = "ChromeNativeTestActivity";
     private final String EXTRA_RUN_IN_SUB_THREAD = "RunInSubThread";
     // We post a delayed task to run tests so that we do not block onCreate().