Introduce ViewRoot forwarding input/view events to native

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 dc3c7dc06fcf98a5628fd7740e52190c4ccd9b5d..a3cf5dd68ea8d57df6c67930e1bfc3f7043b450f 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
@@ -78,7 +78,7 @@ import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.content_public.common.Referrer;
 import org.chromium.ui.base.PageTransition;
-import org.chromium.ui.base.WindowAndroid;
+import org.chromium.ui.base.ViewRoot;
 
 /**
  * The activity for custom tabs. It will be launched on top of a client's task.
@@ -150,9 +150,9 @@ public class CustomTabActivity extends ChromeActivity {
         private final BrowserStateBrowserControlsVisibilityDelegate mVisibilityDelegate;
 
         public CustomTabCreator(
-                ChromeActivity activity, WindowAndroid nativeWindow, boolean incognito,
+                ChromeActivity activity, ViewRoot viewRoot, boolean incognito,
                 boolean supportsUrlBarHiding, boolean isOpenedByChrome) {
-            super(activity, nativeWindow, incognito);
+            super(activity, viewRoot, incognito);
             mSupportsUrlBarHiding = supportsUrlBarHiding;
             mIsOpenedByChrome = isOpenedByChrome;
             mVisibilityDelegate = activity.getFullscreenManager().getBrowserVisibilityDelegate();
@@ -370,11 +370,11 @@ public class CustomTabActivity extends ChromeActivity {
     protected Pair<CustomTabCreator, CustomTabCreator> createTabCreators() {
         return Pair.create(
                 new CustomTabCreator(
-                        this, getWindowAndroid(), false,
+                        this, getViewRoot(), false,
                         mIntentDataProvider.shouldEnableUrlBarHiding(),
                         mIntentDataProvider.isOpenedByChrome()),
                 new CustomTabCreator(
-                        this, getWindowAndroid(), true,
+                        this, getViewRoot(), true,
                         mIntentDataProvider.shouldEnableUrlBarHiding(),
                         mIntentDataProvider.isOpenedByChrome()));
     }
@@ -514,7 +514,7 @@ public class CustomTabActivity extends ChromeActivity {
             if (referrer != null) referrerUrl = referrer.getUrl();
         }
         Tab tab = new Tab(TabIdManager.getInstance().generateValidId(Tab.INVALID_TAB_ID),
-                Tab.INVALID_TAB_ID, false, this, getWindowAndroid(),
+                Tab.INVALID_TAB_ID, false, this, getViewRoot(),
                 TabLaunchType.FROM_EXTERNAL_APP, null, null);
         tab.setAppAssociatedWith(customTabsConnection.getClientPackageNameForSession(mSession));