Mac: Add new accessibility attributes for textfields (and some for all views).

ui/views/controls/textfield/textfield.cc

 // Copyright (c) 2012 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 "ui/views/controls/textfield/textfield.h"
 
 #include <string>
 #include <utility>
 
 #include "base/trace_event/trace_event.h"
@@ skipping 895 matching lines @@
   if (read_only())
     state->AddStateFlag(ui::AX_STATE_READ_ONLY);
   else
     state->AddStateFlag(ui::AX_STATE_EDITABLE);
   if (text_input_type_ == ui::TEXT_INPUT_TYPE_PASSWORD) {
     state->AddStateFlag(ui::AX_STATE_PROTECTED);
     state->value = base::string16(text().size(), '*');
   } else {
     state->value = text();
   }
+  state->placeholder = GetPlaceholderText();
+
   const gfx::Range range = GetSelectedRange();
   state->selection_start = range.start();
   state->selection_end = range.end();
 
   if (!read_only()) {
     state->set_value_callback =
         base::Bind(&Textfield::AccessibilitySetValue,
                    weak_ptr_factory_.GetWeakPtr());
   }
 }
@@ skipping 1034 matching lines @@
     RequestFocus();
   model_->MoveCursorTo(mouse);
   if (!selection_clipboard_text.empty()) {
     model_->InsertText(selection_clipboard_text);
     UpdateAfterChange(true, true);
   }
   OnAfterUserAction();
 }
 
 }  // namespace views