Remove the ENABLE_IFRAME_SEAMLESS compile-time flag.

Source/WebCore/css/CSSSelector.cpp

Index: Source/WebCore/css/CSSSelector.cpp
diff --git a/Source/WebCore/css/CSSSelector.cpp b/Source/WebCore/css/CSSSelector.cpp
index 6944b65e988c2d39fd4028407f325f6ba0e97226..e35153c20886c7c372815ea5129d7de4cc5a2ff5 100644
--- a/Source/WebCore/css/CSSSelector.cpp
+++ b/Source/WebCore/css/CSSSelector.cpp
@@ -236,14 +236,12 @@ PseudoId CSSSelector::pseudoId(PseudoType type)
     case PseudoOutOfRange:
     case PseudoUserAgentCustomElement:
     case PseudoWebKitCustomElement:
+    case PseudoSeamlessDocument:
 #if ENABLE(VIDEO_TRACK)
     case PseudoCue:
     case PseudoFutureCue:
     case PseudoPastCue:
 #endif
-#if ENABLE(IFRAME_SEAMLESS)
-    case PseudoSeamlessDocument:
-#endif
 #if ENABLE(SHADOW_DOM)
     case PseudoDistributed:
 #endif
@@ -323,6 +321,7 @@ static HashMap<AtomicStringImpl*, CSSSelector::PseudoType>* nameToPseudoTypeMap(
     DEFINE_STATIC_LOCAL(AtomicString, firstPage, ("first", AtomicString::ConstructFromLiteral));
     DEFINE_STATIC_LOCAL(AtomicString, leftPage, ("left", AtomicString::ConstructFromLiteral));
     DEFINE_STATIC_LOCAL(AtomicString, rightPage, ("right", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(AtomicString, seamlessDocument, ("-webkit-seamless-document", AtomicString::ConstructFromLiteral));
 #if ENABLE(FULLSCREEN_API)
     DEFINE_STATIC_LOCAL(AtomicString, fullScreen, ("-webkit-full-screen", AtomicString::ConstructFromLiteral));
     DEFINE_STATIC_LOCAL(AtomicString, fullScreenDocument, ("-webkit-full-screen-document", AtomicString::ConstructFromLiteral));
@@ -334,9 +333,6 @@ static HashMap<AtomicStringImpl*, CSSSelector::PseudoType>* nameToPseudoTypeMap(
     DEFINE_STATIC_LOCAL(AtomicString, futureCue, ("future", AtomicString::ConstructFromLiteral));
     DEFINE_STATIC_LOCAL(AtomicString, pastCue, ("past", AtomicString::ConstructFromLiteral));
 #endif
-#if ENABLE(IFRAME_SEAMLESS)
-    DEFINE_STATIC_LOCAL(AtomicString, seamlessDocument, ("-webkit-seamless-document", AtomicString::ConstructFromLiteral));
-#endif
 #if ENABLE(SHADOW_DOM)
     DEFINE_STATIC_LOCAL(AtomicString, distributed, ("-webkit-distributed(", AtomicString::ConstructFromLiteral));
 #endif
@@ -411,6 +407,7 @@ static HashMap<AtomicStringImpl*, CSSSelector::PseudoType>* nameToPseudoTypeMap(
         nameToPseudoType->set(firstPage.impl(), CSSSelector::PseudoFirstPage);
         nameToPseudoType->set(leftPage.impl(), CSSSelector::PseudoLeftPage);
         nameToPseudoType->set(rightPage.impl(), CSSSelector::PseudoRightPage);
+        nameToPseudoType->set(seamlessDocument.impl(), CSSSelector::PseudoSeamlessDocument);
 #if ENABLE(FULLSCREEN_API)
         nameToPseudoType->set(fullScreen.impl(), CSSSelector::PseudoFullScreen);
         nameToPseudoType->set(fullScreenDocument.impl(), CSSSelector::PseudoFullScreenDocument);
@@ -422,9 +419,6 @@ static HashMap<AtomicStringImpl*, CSSSelector::PseudoType>* nameToPseudoTypeMap(
         nameToPseudoType->set(futureCue.impl(), CSSSelector::PseudoFutureCue);
         nameToPseudoType->set(pastCue.impl(), CSSSelector::PseudoPastCue);
 #endif
-#if ENABLE(IFRAME_SEAMLESS)
-        nameToPseudoType->set(seamlessDocument.impl(), CSSSelector::PseudoSeamlessDocument);
-#endif
 #if ENABLE(SHADOW_DOM)
         nameToPseudoType->set(distributed.impl(), CSSSelector::PseudoDistributed);
 #endif
@@ -551,9 +545,7 @@ void CSSSelector::extractPseudoType() const
     case PseudoFullScreenAncestor:
     case PseudoAnimatingFullScreenTransition:
 #endif
-#if ENABLE(IFRAME_SEAMLESS)
     case PseudoSeamlessDocument:
-#endif
     case PseudoInRange:
     case PseudoOutOfRange:
 #if ENABLE(VIDEO_TRACK)