Split out foreground session tracking from the application code.

chrome/android/java/src/org/chromium/chrome/browser/BrowserRestartActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/BrowserRestartActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/BrowserRestartActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/BrowserRestartActivity.java
index ff20d15edd079ee8e08d3cfcbbf9c164fa084cf7..e8f95ff5d5e5eb3a23d9577fd7886dd7dfd32265 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/BrowserRestartActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/BrowserRestartActivity.java
@@ -19,7 +19,8 @@ import org.chromium.chrome.browser.util.IntentUtils;
 /**
  * Kills and (optionally) restarts the main Chrome process, then immediately kills itself.
  *
- * Starting this Activity should only be done by the {@link ChromeLifetimeController}, and requires
+ * Starting this Activity should only be done by the
+ * {@link org.chromium.chrome.browser.init.ChromeLifetimeController}, and requires
  * passing in the process ID (the Intent should have the value of Process#myPid() as an extra).
  *
  * This Activity runs on a separate process from the main Chrome browser and cannot see the main
@@ -27,14 +28,14 @@ import org.chromium.chrome.browser.util.IntentUtils;
  * AlarmManager, which requires a minimum alarm duration of 5 seconds: https://crbug.com/515919.
  */
 public class BrowserRestartActivity extends Activity {
-    static final String ACTION_START_WATCHDOG =
+    public static final String ACTION_START_WATCHDOG =
             "org.chromium.chrome.browser.BrowserRestartActivity.start_watchdog";
-    static final String ACTION_KILL_PROCESS =
+    public static final String ACTION_KILL_PROCESS =
             "org.chromium.chrome.browser.BrowserRestartActivity.kill_process";
 
-    static final String EXTRA_MAIN_PID =
+    public static final String EXTRA_MAIN_PID =
             "org.chromium.chrome.browser.BrowserRestartActivity.main_pid";
-    static final String EXTRA_RESTART =
+    public static final String EXTRA_RESTART =
             "org.chromium.chrome.browser.BrowserRestartActivity.restart";
 
     private static final String TAG = "BrowserRestartActivity";