Remove bogus use of the term "user style" in Blink and Blink API

Source/testing/runner/TestRunner.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2010 Pawel Hajdan (phajdan.jr@chromium.org)
  * Copyright (C) 2012 Apple 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
@@ skipping 1271 matching lines @@
 {
     result->setNull();
     m_webView->setSelectionColors(0xffee0000, 0xff00ee00, 0xff000000, 0xffc0c0c0);
 }
 
 void TestRunner::addUserStyleSheet(const CppArgumentList& arguments, CppVariant* result)
 {
     result->setNull();
     if (arguments.size() < 2 || !arguments[0].isString() || !arguments[1].isBool())
         return;
-    WebView::addUserStyleSheet(
+    WebView::injectStyleSheet(
         cppVariantToWebString(arguments[0]), WebVector<WebString>(),
-        arguments[1].toBoolean() ? WebView::UserContentInjectInAllFrames : WebView::UserContentInjectInTopFrameOnly,
-        // Chromium defaults to InjectInSubsequentDocuments, but for compatibility
-        // with the other ports' DRTs, we use UserStyleInjectInExistingDocuments.
-        WebView::UserStyleInjectInExistingDocuments);
+        arguments[1].toBoolean() ? WebView::InjectStyleInAllFrames : WebView::InjectStyleInTopFrameOnly);
 }
 
 void TestRunner::startSpeechInput(const CppArgumentList& arguments, CppVariant* result)
 {
     result->setNull();
     if (arguments.size() != 1)
         return;
 
     WebElement element;
     if (!WebBindings::getElement(arguments[0].value.objectValue, &element))
@@ skipping 841 matching lines @@
     result->setNull();
 }
 
 void TestRunner::setPointerLockWillFailSynchronously(const CppArgumentList&, CppVariant* result)
 {
     m_pointerLockPlannedResult = PointerLockWillFailSync;
     result->setNull();
 }
 
 }