[Autofill] Migrate ContentAutofillDriver<-->AutofillAgent IPCs to mojo.

components/autofill/content/browser/content_autofill_driver.cc

Index: components/autofill/content/browser/content_autofill_driver.cc
diff --git a/components/autofill/content/browser/content_autofill_driver.cc b/components/autofill/content/browser/content_autofill_driver.cc
index ed4860c41c4950f551f7a83457684b3b12cb3780..c8943110d1503c44052feb30b6e1c250f5b5d123 100644
--- a/components/autofill/content/browser/content_autofill_driver.cc
+++ b/components/autofill/content/browser/content_autofill_driver.cc
@@ -83,10 +83,14 @@ void ContentAutofillDriver::SendFormDataToRenderer(
     const FormData& data) {
   if (!RendererIsAvailable())
     return;
+
+  ConnectToMojoAutofillAgentIfNeeded();
   switch (action) {
     case FORM_DATA_ACTION_FILL:
-      render_frame_host_->Send(new AutofillMsg_FillForm(
-          render_frame_host_->GetRoutingID(), query_id, data));
+      mojo_autofill_agent_->FillForm(
+          query_id, data,
+          base::Bind(&ContentAutofillDriver::DidFillAutofillFormData,
+                     base::Unretained(this)));
       break;
     case FORM_DATA_ACTION_PREVIEW:
       render_frame_host_->Send(new AutofillMsg_PreviewForm(
@@ -205,9 +209,6 @@ bool ContentAutofillDriver::HandleMessage(const IPC::Message& message) {
   IPC_MESSAGE_FORWARD(AutofillHostMsg_PingAck,
                       &autofill_external_delegate_,
                       AutofillExternalDelegate::OnPingAck)
-  IPC_MESSAGE_FORWARD(AutofillHostMsg_DidFillAutofillFormData,
-                      autofill_manager_.get(),
-                      AutofillManager::OnDidFillAutofillFormData)
   IPC_MESSAGE_FORWARD(AutofillHostMsg_DidEndTextFieldEditing,
                       autofill_manager_.get(),
                       AutofillManager::OnDidEndTextFieldEditing)
@@ -240,6 +241,12 @@ void ContentAutofillDriver::NotifyFirstUserGestureObservedInTab() {
   mojo_autofill_agent_->FirstUserGestureObservedInTab();
 }
 
+void ContentAutofillDriver::DidFillAutofillFormData(const FormData& filled,
+                                                    int64_t timestamp) {
+  autofill_manager_->OnDidFillAutofillFormData(
+      filled, base::TimeTicks::FromInternalValue(timestamp));
+}
+
 void ContentAutofillDriver::ConnectToMojoAutofillAgentIfNeeded() {
   if (mojo_autofill_agent_)
     return;