Revert r154797: "Move isValid/isCurrentColor from Color to StyleColor"

Source/web/ColorChooserPopupUIController.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 97 matching lines @@
 Locale& ColorChooserPopupUIController::locale()
 {
     return *m_locale;
 }
 
 void ColorChooserPopupUIController::setValueAndClosePopup(int numValue, const String& stringValue)
 {
     ASSERT(m_popup);
     ASSERT(m_client);
     if (numValue == ColorPickerPopupActionSetValue)
-        m_client->didChooseColor(StyleColor(stringValue).color());
+        m_client->didChooseColor(Color(stringValue));
     if (numValue == ColorPickerPopupActionChooseOtherColor)
         openColorChooser();
     closePopup();
 }
 
 void ColorChooserPopupUIController::setValue(const String& value)
 {
     ASSERT(m_client);
-    m_client->didChooseColor(StyleColor(value).color());
+    m_client->didChooseColor(Color(value));
 }
 
 void ColorChooserPopupUIController::didClosePopup()
 {
     m_popup = 0;
 
     if (!m_chooser)
         didEndChooser();
 }
 
 
 void ColorChooserPopupUIController::openPopup()
 {
     ASSERT(!m_popup);
     m_popup = m_chromeClient->openPagePopup(this, m_client->elementRectRelativeToRootView());
 }
 
 void ColorChooserPopupUIController::closePopup()
 {
     if (!m_popup)
         return;
     m_chromeClient->closePagePopup(m_popup);
 }
 
 }