Turn off picture splitting for now.

Splitting the content was causing a mismatch between the base content picture
and composited layers.  It was also happening on every single inval.

Bug: 3372320
Change-Id: I09da2d0f3cba028c355ceba2b4c8e34da5a77028

core/java/android/webkit/WebView.java

@@ -4101,7 +4101,9 @@ public class WebView extends AbsoluteLayout
                 df = mScrollFilter;
             }
             canvas.setDrawFilter(df);
-            int content = nativeDraw(canvas, color, extras, true);
+            // XXX: Revisit splitting content.  Right now it causes a
+            // synchronization problem with layers.
+            int content = nativeDraw(canvas, color, extras, false);
             canvas.setDrawFilter(null);
             if (content != 0) {
                 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0);