Introduce ViewRoot forwarding input/view events to native

chrome/android/javatests/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorObserverTestBase.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorObserverTestBase.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorObserverTestBase.java b/chrome/android/javatests/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorObserverTestBase.java
index 0e2297ad5216f9c36cb8ba94d2710b0564f56c27..45946cefb9fe6f53f81d1a3af5c4fd397c4a546d 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorObserverTestBase.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorObserverTestBase.java
@@ -12,6 +12,7 @@ import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabSelectionType;
 import org.chromium.content.browser.test.NativeLibraryTestBase;
 import org.chromium.content_public.browser.LoadUrlParams;
+import org.chromium.ui.base.ViewRoot;
 import org.chromium.ui.base.WindowAndroid;
 
 import java.util.HashSet;
@@ -25,7 +26,7 @@ public class TabModelSelectorObserverTestBase extends NativeLibraryTestBase {
     protected TabModelSelectorTestTabModel mNormalTabModel;
     protected TabModelSelectorTestTabModel mIncognitoTabModel;
 
-    protected WindowAndroid mWindowAndroid;
+    protected ViewRoot mViewRoot;
 
     @Override
     public void setUp() throws Exception {
@@ -43,8 +44,9 @@ public class TabModelSelectorObserverTestBase extends NativeLibraryTestBase {
     }
 
     private void initialize() {
-        mWindowAndroid = new WindowAndroid(
+        WindowAndroid windowAndroid = new WindowAndroid(
                 getInstrumentation().getTargetContext().getApplicationContext());
+        mViewRoot = ViewRoot.create(windowAndroid);
 
         mSelector = new TabModelSelectorBase() {
             @Override