Separate @viewport from other RuleSet construction.

third_party/WebKit/Source/core/css/resolver/ScopedStyleResolver.cpp

Index: third_party/WebKit/Source/core/css/resolver/ScopedStyleResolver.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/ScopedStyleResolver.cpp b/third_party/WebKit/Source/core/css/resolver/ScopedStyleResolver.cpp
index 4e64c8f2fc4e5f4822ca815746f3a84c1a305155..08e33e2ae7f7d7f5c82370dfc848eae70f35ce46 100644
--- a/third_party/WebKit/Source/core/css/resolver/ScopedStyleResolver.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/ScopedStyleResolver.cpp
@@ -38,7 +38,6 @@
 #include "core/css/StyleRule.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/css/resolver/MatchRequest.h"
-#include "core/css/resolver/ViewportStyleResolver.h"
 #include "core/dom/Document.h"
 #include "core/dom/StyleChangeReason.h"
 #include "core/dom/StyleEngine.h"
@@ -260,16 +259,6 @@ void ScopedStyleResolver::matchPageRules(PageRuleCollector& collector) {
     collector.matchPageRules(&m_authorStyleSheets[i]->contents()->ruleSet());
 }
 
-void ScopedStyleResolver::collectViewportRulesTo(
-    ViewportStyleResolver* resolver) const {
-  if (!m_scope->rootNode().isDocumentNode())
-    return;
-  for (size_t i = 0; i < m_authorStyleSheets.size(); ++i)
-    resolver->collectViewportRules(
-        &m_authorStyleSheets[i]->contents()->ruleSet(),
-        ViewportStyleResolver::AuthorOrigin);
-}
-
 DEFINE_TRACE(ScopedStyleResolver) {
   visitor->trace(m_scope);
   visitor->trace(m_authorStyleSheets);