Enable Chrome Signin from Webstore

chrome/renderer/one_click_signin_agent.cc

Index: chrome/renderer/one_click_signin_agent.cc
diff --git a/chrome/renderer/one_click_signin_agent.cc b/chrome/renderer/one_click_signin_agent.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9b0c5a9730768521d087de52bc0715e7afc44142
--- /dev/null
+++ b/chrome/renderer/one_click_signin_agent.cc
@@ -0,0 +1,29 @@
+// Copyright (c) 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 "chrome/renderer/one_click_signin_agent.h"
+
+#include "chrome/common/one_click_signin_messages.h"
+#include "content/public/common/password_form.h"
+#include "content/public/renderer/document_state.h"
+#include "content/public/renderer/render_view.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebFormElement.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
+
+OneClickSigninAgent::OneClickSigninAgent(
+    content::RenderView* render_view)
+    : content::RenderViewObserver(render_view) {
+}
+
+OneClickSigninAgent::~OneClickSigninAgent() {}
+
+void OneClickSigninAgent::WillSubmitForm(WebKit::WebFrame* frame,
+                                         const WebKit::WebFormElement& form) {
+  content::DocumentState* document_state =
+      content::DocumentState::FromDataSource(frame->provisionalDataSource());
+  if (document_state->password_form_data()) {
+    Send(new OneClickSigninHostMsg_FormSubmitted(routing_id(),
+         *(document_state->password_form_data())));
+  }
+}