Add EventForwarder for routing touch events

content/public/android/java/src/org/chromium/content/browser/ContentView.java

Index: content/public/android/java/src/org/chromium/content/browser/ContentView.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentView.java b/content/public/android/java/src/org/chromium/content/browser/ContentView.java
index 33f7d538f670997dcd10d269ccf5584c64f8b974..8dec16843758b572d86682fee0a20fb6353eb24d 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentView.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentView.java
@@ -22,6 +22,8 @@ import android.view.inputmethod.InputConnection;
 import android.widget.FrameLayout;
 
 import org.chromium.base.TraceEvent;
+import org.chromium.ui.base.EventHandler;
+import org.chromium.ui.base.SPenSupport;
 
 /**
  * The containing view for {@link ContentViewCore} that exists in the Android UI hierarchy and
@@ -37,6 +39,7 @@ public class ContentView extends FrameLayout
             MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
 
     protected final ContentViewCore mContentViewCore;
+    private EventHandler mEventHandler;
 
     /**
      * The desired size of this view in {@link MeasureSpec}. Set by the host
@@ -77,6 +80,7 @@ public class ContentView extends FrameLayout
         setFocusableInTouchMode(true);
 
         mContentViewCore = cvc;
+        SPenSupport.detect(context);
     }
 
     @Override
@@ -184,7 +188,7 @@ public class ContentView extends FrameLayout
 
     @Override
     public boolean onTouchEvent(MotionEvent event) {
-        return mContentViewCore.onTouchEvent(event);
+        return getEventHandler().onTouchEvent(event);
     }
 
     /**
@@ -204,6 +208,13 @@ public class ContentView extends FrameLayout
         return mContentViewCore.onGenericMotionEvent(event);
     }
 
+    private EventHandler getEventHandler() {
+        if (mEventHandler == null) {
+            mEventHandler = mContentViewCore.getWebContents().getEventHandler();
+        }
+        return mEventHandler;
+    }
+
     @Override
     public boolean performLongClick() {
         return false;