Add EventForwarder for routing touch events

content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java

Index: content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java b/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
index 322d0727a97e5a642207395345683c1bb8916a98..e9e042785ec0ef5a77c5dccaea5148d9a3a79ad3 100644
--- a/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
+++ b/content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java
@@ -19,10 +19,12 @@ import org.chromium.base.VisibleForTesting;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.content.browser.AppWebMessagePort;
+import org.chromium.content.browser.EventForwarderImpl;
 import org.chromium.content.browser.MediaSessionImpl;
 import org.chromium.content_public.browser.AccessibilitySnapshotCallback;
 import org.chromium.content_public.browser.AccessibilitySnapshotNode;
 import org.chromium.content_public.browser.ContentBitmapCallback;
+import org.chromium.content_public.browser.EventForwarder;
 import org.chromium.content_public.browser.ImageDownloadCallback;
 import org.chromium.content_public.browser.JavaScriptCallback;
 import org.chromium.content_public.browser.MessagePort;
@@ -103,6 +105,8 @@ import java.util.UUID;
 
     private SmartClipCallback mSmartClipCallback;
 
+    private EventForwarderImpl mEventForwarder;
+
     private WebContentsImpl(
             long nativeWebContentsAndroid, NavigationController navigationController) {
         mNativeWebContentsAndroid = nativeWebContentsAndroid;
@@ -464,6 +468,12 @@ import java.util.UUID;
     }
 
     @Override
+    public EventForwarder getEventForwarder() {
+        if (mEventForwarder == null) mEventForwarder = EventForwarderImpl.create(this);
+        return mEventForwarder;
+    }
+
+    @Override
     public void addObserver(WebContentsObserver observer) {
         assert mNativeWebContentsAndroid != 0;
         if (mObserverProxy == null) mObserverProxy = new WebContentsObserverProxy(this);