Adding backgroundColor to WebCompositionUnderline and using it for InlineTextBox drawing.

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 2298 matching lines @@
 
 WebVector<WebCompositionUnderline> WebViewImpl::compositionUnderlines() const
 {
     const LocalFrame* focused = toLocalFrame(focusedWebCoreFrame());
     if (!focused)
         return WebVector<WebCompositionUnderline>();
     const Vector<CompositionUnderline>& underlines = focused->inputMethodController().customCompositionUnderlines();
     WebVector<WebCompositionUnderline> results(underlines.size());
     for (size_t index = 0; index < underlines.size(); ++index) {
         CompositionUnderline underline = underlines[index];
-        results[index] = WebCompositionUnderline(underline.startOffset, underline.endOffset, static_cast<WebColor>(underline.color.rgb()), underline.thick);
+        results[index] = WebCompositionUnderline(underline.startOffset, underline.endOffset, static_cast<WebColor>(underline.color.rgb()), underline.thick, static_cast<WebColor>(underline.backgroundColor.rgb()));
     }
     return results;
 }
 
 WebColor WebViewImpl::backgroundColor() const
 {
     if (isTransparent())
         return Color::transparent;
     if (!m_page)
         return m_baseBackgroundColor;
@@ skipping 1744 matching lines @@
     const PageScaleConstraints& constraints = m_pageScaleConstraintsSet.pageDefinedConstraints();
 
     if (!mainFrameImpl() || !mainFrameImpl()->frameView())
         return false;
 
     return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
         || (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
 }
 
 } // namespace blink