Add a basic functionality to the force-saving menu item.

components/autofill/content/renderer/password_autofill_agent.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/autofill/content/renderer/password_autofill_agent.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 949 matching lines @@
   }
 }
 
 bool PasswordAutofillAgent::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PasswordAutofillAgent, message)
     IPC_MESSAGE_HANDLER(AutofillMsg_FillPasswordForm, OnFillPasswordForm)
     IPC_MESSAGE_HANDLER(AutofillMsg_SetLoggingState, OnSetLoggingState)
     IPC_MESSAGE_HANDLER(AutofillMsg_AutofillUsernameDataReceived,
                         OnAutofillUsernameDataReceived)
+    IPC_MESSAGE_HANDLER(AutofillMsg_FindFocusedPasswordForm,
+                        OnFindFocusedPasswordForm)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void PasswordAutofillAgent::DidFinishDocumentLoad() {
   // The |frame| contents have been parsed, but not yet rendered.  Let the
   // PasswordManager know that forms are loaded, even though we can't yet tell
   // whether they're visible.
   SendPasswordForms(false);
@@ skipping 254 matching lines @@
 
 void PasswordAutofillAgent::OnSetLoggingState(bool active) {
   logging_state_active_ = active;
 }
 
 void PasswordAutofillAgent::OnAutofillUsernameDataReceived(
     const FormDataFieldDataMap& predictions) {
   form_predictions_ = predictions;
 }
 
+void PasswordAutofillAgent::OnFindFocusedPasswordForm() {
+  scoped_ptr<PasswordForm> password_form;
+
+  blink::WebElement element = render_frame()->GetFocusedElement();
+  if (!element.isNull() && element.hasHTMLTagName("input")) {
+    blink::WebInputElement input = element.to<blink::WebInputElement>();
+    if (input.isPasswordField() && !input.form().isNull()) {
+      password_form = CreatePasswordForm(
+          input.form(), &nonscript_modified_values_, &form_predictions_);
+    }
+  }
+
+  if (!password_form.get())
+    password_form.reset(new PasswordForm());

[Mike West, 2015/05/29 12:26:53]

Optional nit: I'd fold this into line 1247; that is, set it to an empty password
form, and replace it iff you find one focused on the page.

[msramek, 2015/05/29 12:38:55]

If the WebFormElement is ununderstandable to CreatePasswordForm(), it will
return a null scoped_ptr. So we would still need to check it here.

+
+  Send(new AutofillHostMsg_FocusedPasswordFormFound(
+      routing_id(), *password_form));
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // PasswordAutofillAgent, private:
 
 PasswordAutofillAgent::PasswordInfo::PasswordInfo()
     : backspace_pressed_last(false), password_was_edited_last(false) {
 }
 
 bool PasswordAutofillAgent::ShowSuggestionPopup(
     const PasswordFormFillData& fill_data,
     const blink::WebInputElement& user_input,
@@ skipping 176 matching lines @@
 void PasswordAutofillAgent::LegacyPasswordAutofillAgent::DidStopLoading() {
   agent_->DidStopLoading();
 }
 
 void PasswordAutofillAgent::LegacyPasswordAutofillAgent::
     DidStartProvisionalLoad(blink::WebLocalFrame* navigated_frame) {
   agent_->LegacyDidStartProvisionalLoad(navigated_frame);
 }
 
 }  // namespace autofill