prototype of using cct when 'bouncing out' of webapk

chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationHandler.java

Index: chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationHandler.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationHandler.java b/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationHandler.java
index 99c2a0418e6c33bcb9d4d677230334e3549929bd..ece7817e2585d69e40c8514104590c961e2a40ed 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationHandler.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationHandler.java
@@ -15,12 +15,17 @@ import android.text.TextUtils;
 import android.webkit.WebView;
 
 import org.chromium.base.CommandLine;
+import org.chromium.base.ContextUtils;
 import org.chromium.base.Log;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.chrome.browser.ChromeSwitches;
+import org.chromium.chrome.browser.ChromeTabbedActivity;
 import org.chromium.chrome.browser.IntentHandler;
 import org.chromium.chrome.browser.UrlConstants;
+import org.chromium.chrome.browser.customtabs.CustomTabActivity;
+import org.chromium.chrome.browser.customtabs.CustomTabIntentDataProvider;
+import org.chromium.chrome.browser.document.ChromeLauncherActivity;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tab.TabRedirectHandler;
 import org.chromium.chrome.browser.util.IntentUtils;
@@ -373,7 +378,22 @@ public class ExternalNavigationHandler {
             if (!mDelegate.isSpecializedHandlerAvailable(resolvingInfos)) {
                 if (params.webApkPackageName() != null) {
                     intent.setPackage(mDelegate.getPackageName());
+                    intent.setClassName(mDelegate.getPackageName(), CustomTabActivity.class.getName());
+
+                    ChromeLauncherActivity.updateHerbIntent(ContextUtils.getApplicationContext(), intent, intent.getData());
+                    intent.putExtra(Browser.EXTRA_APPLICATION_ID, mDelegate.getPackageName());
+                    intent.putExtra(
+                            CustomTabIntentDataProvider.EXTRA_IS_OPENED_BY_CHROME, true);
+
+
+                    // Launch the Activity on top of this task.
+                    int updatedFlags = intent.getFlags();
+                    updatedFlags &= ~Intent.FLAG_ACTIVITY_NEW_TASK;
+                    updatedFlags &= ~Intent.FLAG_ACTIVITY_NEW_DOCUMENT;
+                    intent.setFlags(updatedFlags);
                     mDelegate.startActivity(intent);
+
+
                     return OverrideUrlLoadingResult.OVERRIDE_WITH_EXTERNAL_INTENT;
                 }
                 return OverrideUrlLoadingResult.NO_OVERRIDE;