Support placeholder text in NativeTextfieldViews.

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 "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 11 matching lines @@
 #if defined(OS_WIN)
 #include "base/win/win_util.h"
 // TODO(beng): this should be removed when the OS_WIN hack from
 // ViewHierarchyChanged is removed.
 #include "ui/views/controls/textfield/native_textfield_views.h"
 #include "ui/views/controls/textfield/native_textfield_win.h"
 #endif
 
 namespace views {
 
+// Default placeholder text color.
+const SkColor kDefaultPlaceholderTextColor = SK_ColorLTGRAY;
+
 // static
 const char Textfield::kViewClassName[] = "views/Textfield";
 
 /////////////////////////////////////////////////////////////////////////////
 // Textfield
 
 Textfield::Textfield()
     : native_wrapper_(NULL),
       controller_(NULL),
       style_(STYLE_DEFAULT),
       read_only_(false),
       default_width_in_chars_(0),
       draw_border_(true),
       text_color_(SK_ColorBLACK),
       use_default_text_color_(true),
       background_color_(SK_ColorWHITE),
       use_default_background_color_(true),
       cursor_color_(SK_ColorBLACK),
       use_default_cursor_color_(true),
       initialized_(false),
       horizontal_margins_were_set_(false),
       vertical_margins_were_set_(false),
+      placeholder_text_color_(kDefaultPlaceholderTextColor),
       text_input_type_(ui::TEXT_INPUT_TYPE_TEXT) {
   set_focusable(true);
 }
 
 Textfield::Textfield(StyleFlags style)
     : native_wrapper_(NULL),
       controller_(NULL),
       style_(style),
       read_only_(false),
       default_width_in_chars_(0),
       draw_border_(true),
       text_color_(SK_ColorBLACK),
       use_default_text_color_(true),
       background_color_(SK_ColorWHITE),
       use_default_background_color_(true),
       cursor_color_(SK_ColorBLACK),
       use_default_cursor_color_(true),
       initialized_(false),
       horizontal_margins_were_set_(false),
       vertical_margins_were_set_(false),
+      placeholder_text_color_(kDefaultPlaceholderTextColor),
       text_input_type_(ui::TEXT_INPUT_TYPE_TEXT) {
   set_focusable(true);
   if (IsObscured())
     SetTextInputType(ui::TEXT_INPUT_TYPE_PASSWORD);
 }
 
 Textfield::~Textfield() {
 }
 
 void Textfield::SetController(TextfieldController* controller) {
@@ skipping 369 matching lines @@
     static_cast<NativeTextfieldWin*>(native_wrapper_)->AttachHack();
 #endif
   }
 }
 
 std::string Textfield::GetClassName() const {
   return kViewClassName;
 }
 
 }  // namespace views