Introduce ViewRoot forwarding input/view events to native

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

Index: chrome/android/java/src/org/chromium/chrome/browser/tabmodel/ChromeTabCreator.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/ChromeTabCreator.java b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/ChromeTabCreator.java
index bab35e7c9f3b876c7d8e263ed3ce360863e63b62..2366ee40a7c2c8b0cff747516e708b34be577510 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/ChromeTabCreator.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/ChromeTabCreator.java
@@ -24,7 +24,7 @@ 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;
 
 /**
  * This class creates various kinds of new tabs and adds them to the right {@link TabModel}.
@@ -32,7 +32,7 @@ import org.chromium.ui.base.WindowAndroid;
 public class ChromeTabCreator extends TabCreatorManager.TabCreator {
 
     private final ChromeActivity mActivity;
-    private final WindowAndroid mNativeWindow;
+    private final ViewRoot mViewRoot;
     private final boolean mIncognito;
 
     private TabModel mTabModel;
@@ -40,9 +40,9 @@ public class ChromeTabCreator extends TabCreatorManager.TabCreator {
     private TabModelOrderController mOrderController;
 
     public ChromeTabCreator(
-            ChromeActivity activity, WindowAndroid nativeWindow, boolean incognito) {
+            ChromeActivity activity, ViewRoot viewRoot, boolean incognito) {
         mActivity = activity;
-        mNativeWindow = nativeWindow;
+        mViewRoot = viewRoot;
         mIncognito = incognito;
     }
 
@@ -131,7 +131,7 @@ public class ChromeTabCreator extends TabCreatorManager.TabCreator {
                 assert TabModelUtils.getTabIndexById(mTabModel, assignedTabId)
                         == TabModel.INVALID_TAB_INDEX;
                 tab = Tab.createLiveTab(assignedTabId, mActivity, mIncognito,
-                        mNativeWindow, type, parentId, !openInForeground);
+                        mViewRoot, type, parentId, !openInForeground);
                 tab.initialize(
                         webContents, mTabContentManager, delegateFactory, !openInForeground, false);
                 tab.setParentIntent(parentIntent);
@@ -140,12 +140,12 @@ public class ChromeTabCreator extends TabCreatorManager.TabCreator {
                 // On low memory devices the tabs opened in background are not loaded automatically
                 // to preserve resources (cpu, memory, strong renderer binding) for the foreground
                 // tab.
-                tab = Tab.createTabForLazyLoad(mActivity, mIncognito, mNativeWindow, type,
+                tab = Tab.createTabForLazyLoad(mActivity, mIncognito, mViewRoot, type,
                         parentId, loadUrlParams);
                 tab.initialize(null, mTabContentManager, delegateFactory, !openInForeground, false);
             } else {
                 tab = Tab.createLiveTab(Tab.INVALID_TAB_ID, mActivity, mIncognito,
-                        mNativeWindow, type, parentId, !openInForeground);
+                        mViewRoot, type, parentId, !openInForeground);
                 tab.initialize(null, mTabContentManager, delegateFactory, !openInForeground, false);
                 tab.loadUrl(loadUrlParams);
             }
@@ -179,7 +179,7 @@ public class ChromeTabCreator extends TabCreatorManager.TabCreator {
         TabDelegateFactory delegateFactory = parent == null ? createDefaultTabDelegateFactory()
                 : parent.getDelegateFactory();
         Tab tab = Tab.createLiveTab(Tab.INVALID_TAB_ID, mActivity, mIncognito,
-                mNativeWindow, type, parentId, !openInForeground);
+                mViewRoot, type, parentId, !openInForeground);
         tab.initialize(webContents, mTabContentManager, delegateFactory, !openInForeground, false);
         mTabModel.addTab(tab, position, type);
         return true;
@@ -277,7 +277,7 @@ public class ChromeTabCreator extends TabCreatorManager.TabCreator {
     @Override
     public Tab createFrozenTab(TabState state, int id, int index) {
         Tab tab = Tab.createFrozenTabFromState(
-                id, mActivity, state.isIncognito(), mNativeWindow, state.parentId, state);
+                id, mActivity, state.isIncognito(), mViewRoot, state.parentId, state);
         boolean selectTab = mOrderController.willOpenInForeground(TabLaunchType.FROM_RESTORE,
                 state.isIncognito());
         tab.initialize(