Change CSSParserContext to have a Document handle (vs UseCounter).

third_party/WebKit/Source/core/css/parser/CSSLazyParsingTest.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/StyleRule.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/css/parser/CSSLazyParsingState.h"
 #include "core/css/parser/CSSParser.h"
 #include "core/css/parser/CSSParserContext.h"
@@ skipping 102 matching lines @@
 }
 
 // Regression test for crbug.com/660290 where we change the underlying owning
 // document from the StyleSheetContents without changing the UseCounter. This
 // test ensures that the new UseCounter is used when doing new parsing work.
 TEST_F(CSSLazyParsingTest, ChangeDocuments) {
   std::unique_ptr<DummyPageHolder> dummyHolder =
       DummyPageHolder::create(IntSize(500, 500));
   CSSParserContext* context = CSSParserContext::create(
       HTMLStandardMode, CSSParserContext::DynamicProfile,
-      UseCounter::getFrom(&dummyHolder->document()));
+      &dummyHolder->document());
   m_cachedContents = StyleSheetContents::create(context);
   {
     CSSStyleSheet* sheet =
         CSSStyleSheet::create(m_cachedContents, dummyHolder->document());
     DCHECK(sheet);
 
     String sheetText = "body { background-color: red; } p { color: orange;  }";
     CSSParser::parseSheet(context, m_cachedContents, sheetText,
                           true /* lazy parse */);
 
@@ skipping 77 matching lines @@
   // Parsing the last rule bumps both Gt90 and All buckets.
   ruleAt(styleSheet, 4)->properties();
   m_histogramTester.expectTotalCount(metricName, 7);
   m_histogramTester.expectBucketCount(metricName,
                                       CSSLazyParsingState::UsageGt90, 1);
   m_histogramTester.expectBucketCount(metricName, CSSLazyParsingState::UsageAll,
                                       1);
 }
 
 }  // namespace blink