[Android] Enable ApplicationStatus for WebView.

android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java

Index: android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java b/android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java
index 0989339b969783fb484cf3eec493e0da9250c82c..6ea8c089bda390ba80b040f2ccd76a2398dad500 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java
@@ -4,8 +4,10 @@
 
 package org.chromium.android_webview;
 
+import android.app.Application;
 import android.content.Context;
 
+import org.chromium.base.ApplicationStatus;
 import org.chromium.base.CommandLine;
 import org.chromium.base.PathUtils;
 import org.chromium.base.ThreadUtils;
@@ -42,6 +44,13 @@ public abstract class AwBrowserProcess {
     }
 
     /**
+     * Initializes ApplicationStatus to listen for Activity state changes.
+     */
+    public static void initApplicationStatus(Application application, Context wrappedContext) {

[boliu, 2015/10/01 16:59:01]

actually moving this into start was a *really* good idea, revealed that this
might not be called on the UI thread o_O

[timvolodine, 2015/10/02 14:55:09]

Done.

+        ApplicationStatus.initializeForWebView(application, wrappedContext);
+    }
+
+    /**
      * Starts the chromium browser process running within this process. Creates threads
      * and performs other per-app resource allocations; must not be called from zygote.
      * Note: it is up to the caller to ensure this is only called once.