[Autofill/Autocomplete Feature] Substring matching instead of prefix matching.

components/autofill/content/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 <vector>
 
 #include "base/strings/string16.h"
@@ skipping 151 matching lines @@
 IPC_MESSAGE_ROUTED0(AutofillMsg_ClearForm)
 
 // Tells the renderer that the Autofill previewed form should be cleared.
 IPC_MESSAGE_ROUTED0(AutofillMsg_ClearPreviewedForm)
 
 // Sets the currently selected node's value.
 IPC_MESSAGE_ROUTED1(AutofillMsg_FillFieldWithValue,
                     base::string16 /* value */)
 
 // Sets the suggested value for the currently previewed node.
-IPC_MESSAGE_ROUTED1(AutofillMsg_PreviewFieldWithValue,
-                    base::string16 /* value */)
+IPC_MESSAGE_ROUTED2(AutofillMsg_PreviewFieldWithValue,
+                    base::string16 /* value */,
+                    int /* suggestion start offset */)
 
 // Sets the currently selected node's value to be the given data list value.
 IPC_MESSAGE_ROUTED1(AutofillMsg_AcceptDataListSuggestion,
                     base::string16 /* accepted data list value */)
 
 // Tells the renderer to populate the correct password fields with this
 // generated password.
 IPC_MESSAGE_ROUTED1(AutofillMsg_GeneratedPasswordAccepted,
                     base::string16 /* generated_password */)
 
 // Tells the renderer to fill the username and password with with given
 // values.
 IPC_MESSAGE_ROUTED2(AutofillMsg_FillPasswordSuggestion,
                     base::string16 /* username */,
                     base::string16 /* password */)
 
 // Tells the renderer to preview the username and password with the given
 // values.
-IPC_MESSAGE_ROUTED2(AutofillMsg_PreviewPasswordSuggestion,
+IPC_MESSAGE_ROUTED3(AutofillMsg_PreviewPasswordSuggestion,
                     base::string16 /* username */,
-                    base::string16 /* password */)
+                    base::string16 /* password */,
+                    int /* suggestion start offset */)
 
 // Tells the renderer to find the focused password form (assuming it exists).
 // Renderer is expected to respond with the message
 // |AutofillHostMsg_FocusedPasswordFormFound|.
 IPC_MESSAGE_ROUTED0(AutofillMsg_FindFocusedPasswordForm)
 
 // Tells the renderer that this password form is not blacklisted.  A form can
 // be blacklisted if a user chooses "never save passwords for this site".
 IPC_MESSAGE_ROUTED1(AutofillMsg_FormNotBlacklisted,
                     autofill::PasswordForm /* form checked */)
@@ skipping 143 matching lines @@
 // 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 */)
 
 // Inform the browser which password form is currently focused, as a response
 // to the |AutofillMsg_FindFocusedPasswordForm| request. If no password form
 // is focused, the response will contain an empty |autofill::PasswordForm|.
 IPC_MESSAGE_ROUTED1(AutofillHostMsg_FocusedPasswordFormFound,
                     autofill::PasswordForm)