Fix a bug where the JavaBridgeDispatcherHost is prematurely deleted

content/browser/renderer_host/java/java_bridge_dispatcher_host.cc

Index: content/browser/renderer_host/java/java_bridge_dispatcher_host.cc
diff --git a/content/browser/renderer_host/java/java_bridge_dispatcher_host.cc b/content/browser/renderer_host/java/java_bridge_dispatcher_host.cc
index 831a6dde1561165b9182921f0d003688f629c563..c058dcaa7243ad96a4d3ab93a7f8e4b80325f0ef 100644
--- a/content/browser/renderer_host/java/java_bridge_dispatcher_host.cc
+++ b/content/browser/renderer_host/java/java_bridge_dispatcher_host.cc
@@ -66,6 +66,12 @@ bool JavaBridgeDispatcherHost::Send(IPC::Message* msg) {
   return RenderViewHostObserver::Send(msg);
 }
 
+void JavaBridgeDispatcherHost::RenderViewHostDestroyed() {
+  // Base implementation deletes the object. This class is ref counted, with
+  // refs held by the JavaBridgeDispatcherHostManager and base::Bind, so that
+  // behavior is unwanted.
+}
+
 bool JavaBridgeDispatcherHost::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(JavaBridgeDispatcherHost, msg)