Remove PlatformThemeChromiumDefault as it is dead code

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 148 matching lines @@
 #include "weborigin/SchemeRegistry.h"
 #include "weborigin/SecurityOrigin.h"
 #include "weborigin/SecurityPolicy.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/MainThread.h"
 #include "wtf/RefPtr.h"
 #include "wtf/TemporaryChange.h"
 #include "wtf/Uint8ClampedArray.h"
 
 #if USE(DEFAULT_RENDER_THEME)
-#include "core/platform/chromium/PlatformThemeChromiumDefault.h"
 #include "core/rendering/RenderThemeChromiumDefault.h"
 #endif
 
 #if OS(WIN)
 #if !USE(DEFAULT_RENDER_THEME)
 #include "core/rendering/RenderThemeChromiumWin.h"
 #endif
 #else
 #include "core/rendering/RenderTheme.h"
 #endif
@@ skipping 3394 matching lines @@
 void WebViewImpl::setDomainRelaxationForbidden(bool forbidden, const WebString& scheme)
 {
     SchemeRegistry::setDomainRelaxationForbiddenForURLScheme(forbidden, String(scheme));
 }
 
 void WebViewImpl::setWindowFeatures(const WebWindowFeatures& features)
 {
     m_page->chrome().setWindowFeatures(features);
 }
 
+// FIXME: remove this api. See: https://codereview.chromium.org/17279002/.
 void WebViewImpl::setScrollbarColors(unsigned inactiveColor,
                                      unsigned activeColor,
                                      unsigned trackColor) {
-#if USE(DEFAULT_RENDER_THEME)
-    PlatformThemeChromiumDefault::setScrollbarColors(inactiveColor, activeColor, trackColor);
-#endif
 }
 
 void WebViewImpl::setSelectionColors(unsigned activeBackgroundColor,
                                      unsigned activeForegroundColor,
                                      unsigned inactiveBackgroundColor,
                                      unsigned inactiveForegroundColor) {
 #if USE(DEFAULT_RENDER_THEME)
     RenderThemeChromiumDefault::setSelectionColors(activeBackgroundColor, activeForegroundColor, inactiveBackgroundColor, inactiveForegroundColor);
     RenderTheme::theme().platformColorsDidChange();
 #endif
@@ skipping 537 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 WebKit