Create/Destroy PermissionPromptAndroid when switching tabs on Android

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

Index: chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java
index bef75b3d8814207fcc6c75cf6388b17c6e854c47..76effa53cef32d2299f734b5446b1fe6bb812305 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java
@@ -8,6 +8,7 @@ import org.chromium.base.ObserverList;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabSelectionType;
+import org.chromium.content_public.browser.WebContents;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -51,6 +52,12 @@ public abstract class TabModelSelectorBase implements TabModelSelector {
             @Override
             public void didSelectTab(Tab tab, TabSelectionType type, int lastId) {
                 notifyChanged();
+
+                Tab oldTab = getTabById(lastId);
+                if (tab.getId() != lastId) {
+                    WebContents oldWebContents = (oldTab == null) ? null : oldTab.getWebContents();
+                    nativeOnActiveTabChanged(oldWebContents, tab.getWebContents());
+                }
             }
 
             @Override
@@ -231,4 +238,6 @@ public abstract class TabModelSelectorBase implements TabModelSelector {
             listener.onNewTabCreated(tab);
         }
     }
+
+    static native void nativeOnActiveTabChanged(WebContents oldContents, WebContents newContents);
 }