Add tab reparenting

chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java
index 0c00788997a518239244fc8f632828e5c67a17ec..3987725f3da49dd29af3036b329a79beabda1fa3 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java
@@ -13,6 +13,7 @@ import android.os.IBinder;
 import android.os.StrictMode;
 import android.support.customtabs.CustomTabsCallback;
 import android.support.customtabs.CustomTabsIntent;
+import android.support.v4.app.ActivityOptionsCompat;
 import android.text.TextUtils;
 import android.view.KeyEvent;
 import android.view.MenuItem;
@@ -40,14 +41,17 @@ import org.chromium.chrome.browser.compositor.bottombar.OverlayPanel.StateChange
 import org.chromium.chrome.browser.compositor.layouts.LayoutManagerDocument;
 import org.chromium.chrome.browser.datausage.DataUseTabUIManager;
 import org.chromium.chrome.browser.document.ChromeLauncherActivity;
+import org.chromium.chrome.browser.externalnav.ExternalNavigationDelegateImpl;
 import org.chromium.chrome.browser.rappor.RapporServiceBridge;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tab.TabIdManager;
+import org.chromium.chrome.browser.tabmodel.AsyncTabParamsManager;
 import org.chromium.chrome.browser.tabmodel.EmptyTabModelObserver;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabSelectionType;
 import org.chromium.chrome.browser.tabmodel.TabModelObserver;
 import org.chromium.chrome.browser.tabmodel.TabModelSelectorImpl;
+import org.chromium.chrome.browser.tabmodel.TabReparentingParams;
 import org.chromium.chrome.browser.toolbar.ToolbarControlContainer;
 import org.chromium.chrome.browser.util.ColorUtils;
 import org.chromium.chrome.browser.util.IntentUtils;
@@ -642,11 +646,26 @@ public class CustomTabActivity extends ChromeActivity {
         intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         intent.putExtra(ChromeLauncherActivity.EXTRA_IS_ALLOWED_TO_RETURN_TO_PARENT, false);
 
+        boolean chromeIsDefault = ExternalNavigationDelegateImpl
+                .willChromeHandleIntent(this, intent, true);
+
+        if (chromeIsDefault) {
+            // Take the activity tab and set it aside for reparenting.
+            Tab tab = getActivityTab();
+            getCurrentTabModel().removeTab(tab);

[Ted C, 2016/02/25 20:05:21]

what does CCT do when it has no tabs left it in?

(like if you use mMainTab from your other change after this gets removed).

[Yusuf, 2016/02/25 23:04:59]

If this activity doesn't get destroyed, it is essentially an empty shell with a
toolbar and blank content area.

+            tab.getContentViewCore().updateWindowAndroid(null);
+
+            AsyncTabParamsManager.add(tab.getId(), new TabReparentingParams(tab, intent));
+            intent.putExtra(IntentHandler.EXTRA_TAB_ID, tab.getId());
+            intent.setPackage(getPackageName());
+        }
+
         // Temporarily allowing disk access while fixing. TODO: http://crbug.com/581860
         StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
         StrictMode.allowThreadDiskWrites();
         try {
-            startActivity(intent);
+            startActivity(intent, ActivityOptionsCompat.makeCustomAnimation(
+                    this, R.anim.abc_fade_in, R.anim.abc_fade_out).toBundle());
         } finally {
             StrictMode.setThreadPolicy(oldPolicy);
         }