[Android] Call DevToolsServer.destroy where needed

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
index db9d33a352b59843a55ca37aed4114a9bddd4ebe..c6b483dd0bca4fd9ee478452b657c11d7e6b4f25 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
@@ -327,6 +327,10 @@ public class ChromeApplication extends ContentApplication {
     private void onForegroundActivityDestroyed() {
         if (ApplicationStatus.isEveryActivityDestroyed()) {
             mBackgroundProcessing.onDestroy();
+            if (mDevToolsServer != null) {
+                mDevToolsServer.destroy();
+                mDevToolsServer = null;
+            }
             stopApplicationActivityTracker();
             PartnerBrowserCustomizations.destroy();
             ShareHelper.clearSharedImages(this);