Current work-in-progress crbug.com/567021

third_party/WebKit/Source/web/tests/WebFrameTest.cpp

 /*
  * Copyright (C) 2010 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 200 matching lines @@
         URLTestHelpers::registerMockedURLLoadWithCustomResponse(toKURL(fullString.c_str()), WebString::fromUTF8(fileName.c_str()), WebString::fromUTF8(""), response);
     }
 
     void registerMockedHttpURLLoadWithMimeType(const std::string& fileName, const std::string& mimeType)
     {
         URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()), WebString::fromUTF8(fileName.c_str()), WebString::fromUTF8(mimeType));
     }
 
     void applyViewportStyleOverride(FrameTestHelpers::WebViewHelper* webViewHelper)
     {
-        StyleSheetContents* styleSheet = StyleSheetContents::create(CSSParserContext(UASheetMode, 0));
-        styleSheet->parseString(loadResourceAsASCIIString("viewportAndroid.css"));
-        RuleSet* ruleSet = RuleSet::create();
-        ruleSet->addRulesFromSheet(styleSheet, MediaQueryEvaluator("screen"));
-
         Document* document = toLocalFrame(webViewHelper->webViewImpl()->page()->mainFrame())->document();
-        document->ensureStyleResolver().viewportStyleResolver()->collectViewportRules(ruleSet, ViewportStyleResolver::UserAgentOrigin);
-        document->ensureStyleResolver().viewportStyleResolver()->resolve();
+        document->settings()->setViewportStyle(WebViewportStyle::Mobile);
+        document->styleEngine().ensureViewportStyleResolver().collectViewportRulesFromUASheets();
+        document->styleEngine().ensureViewportStyleResolver().resolve();
     }
 
     static void configueCompositingWebView(WebSettings* settings)
     {
         settings->setAcceleratedCompositingEnabled(true);
         settings->setPreferCompositingToLCDTextEnabled(true);
     }
 
     static void configureAndroid(WebSettings* settings)
     {
@@ skipping 8445 matching lines @@
     WebLocalFrame* mainFrame = helper.webView()->mainFrame()->toWebLocalFrame();
     v8::HandleScope scope(v8::Isolate::GetCurrent());
     mainFrame->executeScript(WebScriptSource("hello = 'world';"));
     FrameTestHelpers::loadFrame(mainFrame, "data:text/html,new page");
     v8::Local<v8::Value> result = mainFrame->executeScriptAndReturnValue(WebScriptSource("hello"));
     ASSERT_TRUE(result->IsString());
     EXPECT_EQ("world", toCoreString(result->ToString(mainFrame->mainWorldScriptContext()).ToLocalChecked()));
 }
 
 } // namespace blink