Add support for snapshot loading to Sky

sky/engine/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 86 matching lines @@
 {
     std::string filename = url.ExtractFileName();
     int hashStart = filename.find('#');
     if (hashStart != -1)
         filename.resize(hashStart);
     int queryStart = filename.find('?');
     if (queryStart != -1)
         filename.resize(queryStart);
     // For now .dart indicates we should use SkyView. Eventually we'll
     // use SkyView for all urls regardless of file extension.
-    return !EndsWith(filename, ".dart", false);
+    return !EndsWith(filename, ".dart", false)
+        && !EndsWith(filename, ".snapshot", false);
 }
 
 WebView* WebView::create(WebViewClient* client)
 {
     // Pass the WebViewImpl's self-reference to the caller.
     return WebViewImpl::create(client);
 }
 
 WebViewImpl* WebViewImpl::create(WebViewClient* client)
 {
@@ skipping 702 matching lines @@
 void WebViewImpl::setVisibilityState(WebPageVisibilityState visibilityState,
                                      bool isInitialState) {
     if (!page())
         return;
 
     ASSERT(visibilityState == WebPageVisibilityStateVisible || visibilityState == WebPageVisibilityStateHidden);
     m_page->setVisibilityState(static_cast<PageVisibilityState>(static_cast<int>(visibilityState)), isInitialState);
 }
 
 } // namespace blink