Begin abstracting sending of IPC from autofill core code.

components/autofill/content/browser/autofill_driver_impl.cc

Index: components/autofill/content/browser/autofill_driver_impl.cc
diff --git a/components/autofill/content/browser/autofill_driver_impl.cc b/components/autofill/content/browser/autofill_driver_impl.cc
index 713bee7d4c7dfe7e3b245a98f077f50f89b644cd..2cc9c25567cc6e8d0589306f9d5f58dad90a7d76 100644
--- a/components/autofill/content/browser/autofill_driver_impl.cc
+++ b/components/autofill/content/browser/autofill_driver_impl.cc
@@ -13,6 +13,7 @@
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
+#include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/frame_navigate_params.h"
 #include "ipc/ipc_message_macros.h"
@@ -81,6 +82,19 @@ content::WebContents* AutofillDriverImpl::GetWebContents() {
   return web_contents();
 }
 
+bool AutofillDriverImpl::RendererIsAvailable() {
+  return (web_contents()->GetRenderViewHost() != NULL);
+}
+
+void AutofillDriverImpl::SendFormDataToRenderer(int query_id,
+                                                const FormData& data) {
+  if (!RendererIsAvailable())
+    return;
+  content::RenderViewHost* host = web_contents()->GetRenderViewHost();
+  host->Send(
+      new AutofillMsg_FormDataFilled(host->GetRoutingID(), query_id, data));
+}
+
 bool AutofillDriverImpl::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(AutofillDriverImpl, message)