Add tab reparenting

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
index bf79b0e5fca4f8623307e5895bd3158c2f59e130..63df26fc75d043ce492dc29249617af062cbff4d 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
@@ -104,6 +104,7 @@ import org.chromium.chrome.browser.snackbar.SnackbarManager.SnackbarManageable;
 import org.chromium.chrome.browser.sync.ProfileSyncService;
 import org.chromium.chrome.browser.sync.SyncController;
 import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.browser.tabmodel.AsyncTabParamsManager;
 import org.chromium.chrome.browser.tabmodel.ChromeTabCreator;
 import org.chromium.chrome.browser.tabmodel.EmptyTabModel;
 import org.chromium.chrome.browser.tabmodel.TabCreatorManager;
@@ -697,6 +698,9 @@ public abstract class ChromeActivity extends AsyncInitializationActivity
 
     @Override
     public void onStart() {
+        if (AsyncTabParamsManager.hasParamsWithTabToReparent()) {
+            mCompositorViewHolder.prepareForTabReparenting();
+        }
         super.onStart();
         if (mContextReporter != null) mContextReporter.enable();