Add tab reparenting

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/AsyncTabParamsManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/tabmodel/AsyncTabParamsManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/AsyncTabParamsManager.java b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/AsyncTabParamsManager.java
index e5f91d690bf390801b4228411fd356ab1590078e..4f3b1f95a03c8208ebb0afb2ef535a5a300dfb3b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/AsyncTabParamsManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/AsyncTabParamsManager.java
@@ -13,6 +13,7 @@ import android.util.SparseArray;
 public class AsyncTabParamsManager {
     /** A map of tab IDs to AsyncTabParams consumed by Activities started asynchronously. */
     private static final SparseArray<AsyncTabParams> sAsyncTabParams = new SparseArray<>();
+    private static int sNumOfParamsWithTabToReparent;
 
     /**
      * Stores AsyncTabParams used when the tab with the given ID is launched via intent.
@@ -21,20 +22,31 @@ public class AsyncTabParamsManager {
      */
     public static void add(int tabId, AsyncTabParams params) {
         sAsyncTabParams.put(tabId, params);
+        if (params != null && params.getTabToReparent() != null) sNumOfParamsWithTabToReparent++;
     }
 
     /**
-     * @return Whether there are any saved {@link AsyncTabParams} with the given tab id.
+     * @return Whether there is already an {@link AsyncTabParams} added for the given ID.
      */
     public static boolean hasParamsForTabId(int tabId) {
         return sAsyncTabParams.get(tabId) != null;
     }
 
     /**
+     * @return Whether there are any saved {@link AsyncTabParams} with a tab to reparent. All
+     *         implementations of this are keyed off of a user gesture so the likelihood of having
+     *         more than one is zero.
+     */
+    public static boolean hasParamsWithTabToReparent() {
+        return sNumOfParamsWithTabToReparent > 0;

[Ted C, 2016/02/26 18:46:29]

if you think the number of pending tabs will be at most one.  I would just
iterate across here and return if getTabToReparent() != null.

No need to keep an extra param for now.

[Yusuf, 2016/02/26 19:39:52]

Done.

+    }
+
+    /**
      * @return Retrieves and removes AsyncTabCreationParams for a particular tab id.
      */
     public static AsyncTabParams remove(int tabId) {
         AsyncTabParams data = sAsyncTabParams.get(tabId);
+        if (data != null && data.getTabToReparent() != null) sNumOfParamsWithTabToReparent--;
         sAsyncTabParams.remove(tabId);
         return data;
     }