Split out foreground session tracking from the application code.

chrome/android/java_sources.gni

Index: chrome/android/java_sources.gni
diff --git a/chrome/android/java_sources.gni b/chrome/android/java_sources.gni
index 6551fc323d5ca26ef5d786eaaebd35a0f239106c..7b643fe187b02f508fcd908db5a1db754ec5bb7f 100644
--- a/chrome/android/java_sources.gni
+++ b/chrome/android/java_sources.gni
@@ -15,13 +15,13 @@ chrome_java_sources = [
   "java/src/org/chromium/chrome/browser/BluetoothChooserDialog.java",
   "java/src/org/chromium/chrome/browser/BrowserRestartActivity.java",
   "java/src/org/chromium/chrome/browser/ChromeActivity.java",
+  "java/src/org/chromium/chrome/browser/ChromeActivitySessionTracker.java",
   "java/src/org/chromium/chrome/browser/ChromeApplication.java",
   "java/src/org/chromium/chrome/browser/ChromeBackgroundService.java",
   "java/src/org/chromium/chrome/browser/ChromeBackgroundServiceWaiter.java",
   "java/src/org/chromium/chrome/browser/ChromeBackupAgent.java",
   "java/src/org/chromium/chrome/browser/ChromeFeatureList.java",
   "java/src/org/chromium/chrome/browser/ChromeHttpAuthHandler.java",
-  "java/src/org/chromium/chrome/browser/ChromeLifetimeController.java",
   "java/src/org/chromium/chrome/browser/ChromeStrictMode.java",
   "java/src/org/chromium/chrome/browser/ChromeSwitches.java",
   "java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java",
@@ -430,6 +430,7 @@ chrome_java_sources = [
   "java/src/org/chromium/chrome/browser/init/BrowserParts.java",
   "java/src/org/chromium/chrome/browser/init/ChromeActivityNativeDelegate.java",
   "java/src/org/chromium/chrome/browser/init/ChromeBrowserInitializer.java",
+  "java/src/org/chromium/chrome/browser/init/ChromeLifetimeController.java",
   "java/src/org/chromium/chrome/browser/init/EmptyBrowserParts.java",
   "java/src/org/chromium/chrome/browser/init/InvalidStartupDialog.java",
   "java/src/org/chromium/chrome/browser/init/NativeInitializationController.java",