Generate passwords only for forms that autofill server marks as account creation forms.

components/autofill/core/common/autofill_messages.h

 // 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.
 
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 
 #include "base/time/time.h"
 #include "components/autofill/core/common/autocheckout_status.h"
@@ skipping 172 matching lines @@
 
 // Sent when Autocheckout is supported for the current page. The page has to
 // be whitelisted and the Autofill server must have returned Autocheckout page
 // metadata.
 IPC_MESSAGE_ROUTED0(AutofillMsg_AutocheckoutSupported)
 
 // Sent when the current page is actually displayed in the browser, possibly
 // after being preloaded.
 IPC_MESSAGE_ROUTED0(AutofillMsg_PageShown)
 
+IPC_MESSAGE_ROUTED1(AutofillMsg_AccountCreationFormsDetected,

[Ilya Sherman, 2013/08/29 23:08:13]

nit: Please add documentation for this IPC message.

[zysxqn, 2013/09/03 23:00:20]

Done.

+                    std::vector<GURL> /* form origins */)

[Ilya Sherman, 2013/08/29 23:08:13]

nit: The inline comment should be a variable name.

[zysxqn, 2013/09/03 23:00:20]

Done.

+
 // Autofill messages sent from the renderer to the browser.
 
 // TODO(creis): check in the browser that the renderer actually has permission
 // for the URL to avoid compromised renderers talking to the browser.
 
 // Notification that forms have been seen that are candidates for
 // filling/submitting by the AutofillManager.
 IPC_MESSAGE_ROUTED3(AutofillHostMsg_FormsSeen,
                     std::vector<autofill::FormData> /* forms */,
                     base::TimeTicks /* timestamp */,
@@ skipping 89 matching lines @@
 IPC_MESSAGE_ROUTED4(AutofillHostMsg_ShowPasswordSuggestions,
                     autofill::FormFieldData /* the form field */,
                     gfx::RectF /* input field bounds, window-relative */,
                     std::vector<base::string16> /* suggestions */,
                     std::vector<base::string16> /* realms */)
 
 // Inform browser of data list values for the curent field.
 IPC_MESSAGE_ROUTED2(AutofillHostMsg_SetDataList,
                     std::vector<base::string16> /* values */,
                     std::vector<base::string16> /* labels */)