Do not set touch region on PageOverlay layer.

Source/web/PageOverlay.cpp

Index: Source/web/PageOverlay.cpp
diff --git a/Source/web/PageOverlay.cpp b/Source/web/PageOverlay.cpp
index 06d7816425147671f587554b619a75d749e02441..6a1e59826a924949c26116ad9f3866d73f740c01 100644
--- a/Source/web/PageOverlay.cpp
+++ b/Source/web/PageOverlay.cpp
@@ -122,14 +122,9 @@ void PageOverlay::update()
         if (WebCore::Page* page = m_viewImpl->page())
             page->inspectorController().willAddPageOverlay(m_layer.get());
 
-        // Compositor hit-testing does not know how to deal with layers that may be
-        // transparent to events (see http://crbug.com/269598). So require
-        // scrolling and touches on this layer to go to the main thread.
+        // This is required for contents of overlay to stay in sync with the page while scrolling.
         WebLayer* platformLayer = m_layer->platformLayer();
         platformLayer->setShouldScrollOnMainThread(true);
-        WebVector<WebRect> webRects(static_cast<size_t>(1));
-        webRects[0] = WebRect(0, 0, INT_MAX, INT_MAX);
-        platformLayer->setTouchEventHandlerRegion(webRects);
     }
 
     FloatSize size(m_viewImpl->size());