Password manager: introduce logging for the internals page

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 95 matching lines @@
 IPC_MESSAGE_ROUTED2(AutofillMsg_PreviewForm,
                     int /* query_id */,
                     autofill::FormData /* form */)
 
 // Fill a password form and prepare field autocomplete for multiple
 // matching logins. Lets the renderer know if it should disable the popup
 // because the browser process will own the popup UI.
 IPC_MESSAGE_ROUTED1(AutofillMsg_FillPasswordForm,
                     autofill::PasswordFormFillData /* the fill form data*/)
 
+// Notification to start (|active| == true) or stop (|active| == false) logging
+// the decisions made about saving the password.
+IPC_MESSAGE_ROUTED1(AutofillMsg_ChangeLoggingState, bool /* active */)
+
 // Send the heuristic and server field type predictions to the renderer.
 IPC_MESSAGE_ROUTED1(
     AutofillMsg_FieldTypePredictionsAvailable,
     std::vector<autofill::FormDataPredictions> /* forms */)
 
 // Clears the currently displayed Autofill results.
 IPC_MESSAGE_ROUTED0(AutofillMsg_ClearForm)
 
 // Tells the renderer that the Autofill previewed form should be cleared.
 IPC_MESSAGE_ROUTED0(AutofillMsg_ClearPreviewedForm)
@@ skipping 142 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 */)