[android_webview] Use auto-sizing for webviews in wrap content mode.

android_webview/browser/renderer_host/aw_render_view_host_ext.cc

Index: android_webview/browser/renderer_host/aw_render_view_host_ext.cc
diff --git a/android_webview/browser/renderer_host/aw_render_view_host_ext.cc b/android_webview/browser/renderer_host/aw_render_view_host_ext.cc
index 78d6cf4b4efb3361416185bc6e953582162e04fe..c24a0d134bff7af88455dd55d793a38d61600c17 100644
--- a/android_webview/browser/renderer_host/aw_render_view_host_ext.cc
+++ b/android_webview/browser/renderer_host/aw_render_view_host_ext.cc
@@ -75,6 +75,12 @@ void AwRenderViewHostExt::SetTextZoomLevel(double level) {
   Send(new AwViewMsg_SetTextZoomLevel(web_contents()->GetRoutingID(), level));
 }
 
+void AwRenderViewHostExt::SetAutoResizeMode(bool enable, int width) {
+  DCHECK(CalledOnValidThread());
+  Send(new AwViewMsg_SetAutoResizeMode(
+      web_contents()->GetRoutingID(), enable, width));
+}
+
 void AwRenderViewHostExt::ResetScrollAndScaleState() {
   DCHECK(CalledOnValidThread());
   Send(new AwViewMsg_ResetScrollAndScaleState(web_contents()->GetRoutingID()));