Remove CSS_REGIONS compile flag from Blink.

Source/core/css/StyleRule.cpp

Index: Source/core/css/StyleRule.cpp
diff --git a/Source/core/css/StyleRule.cpp b/Source/core/css/StyleRule.cpp
index d7633baa47da465b6c4d67b716d380a2f3f2ac63..90179fece5e4a411869795818bea906c0ade74e7 100644
--- a/Source/core/css/StyleRule.cpp
+++ b/Source/core/css/StyleRule.cpp
@@ -74,11 +74,9 @@ void StyleRuleBase::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
     case Media:
         static_cast<const StyleRuleMedia*>(this)->reportDescendantMemoryUsage(memoryObjectInfo);
         return;
-#if ENABLE(CSS_REGIONS)
     case Region:
         static_cast<const StyleRuleRegion*>(this)->reportDescendantMemoryUsage(memoryObjectInfo);
         return;
-#endif
     case Import:
         static_cast<const StyleRuleImport*>(this)->reportDescendantMemoryUsage(memoryObjectInfo);
         return;
@@ -100,9 +98,6 @@ void StyleRuleBase::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
     case Unknown:
     case Charset:
     case Keyframe:
-#if !ENABLE(CSS_REGIONS)
-    case Region:
-#endif
         ASSERT_NOT_REACHED();
         return;
     }
@@ -127,11 +122,9 @@ void StyleRuleBase::destroy()
     case Supports:
         delete static_cast<StyleRuleSupports*>(this);
         return;
-#if ENABLE(CSS_REGIONS)
     case Region:
         delete static_cast<StyleRuleRegion*>(this);
         return;
-#endif
     case Import:
         delete static_cast<StyleRuleImport*>(this);
         return;
@@ -152,9 +145,6 @@ void StyleRuleBase::destroy()
     case Unknown:
     case Charset:
     case Keyframe:
-#if !ENABLE(CSS_REGIONS)
-    case Region:
-#endif
         ASSERT_NOT_REACHED();
         return;
     }
@@ -174,10 +164,8 @@ PassRefPtr<StyleRuleBase> StyleRuleBase::copy() const
         return static_cast<const StyleRuleMedia*>(this)->copy();
     case Supports:
         return static_cast<const StyleRuleSupports*>(this)->copy();
-#if ENABLE(CSS_REGIONS)
     case Region:
         return static_cast<const StyleRuleRegion*>(this)->copy();
-#endif
     case Import:
         // FIXME: Copy import rules.
         ASSERT_NOT_REACHED();
@@ -195,9 +183,6 @@ PassRefPtr<StyleRuleBase> StyleRuleBase::copy() const
     case Unknown:
     case Charset:
     case Keyframe:
-#if !ENABLE(CSS_REGIONS)
-    case Region:
-#endif
         ASSERT_NOT_REACHED();
         return 0;
     }
@@ -225,11 +210,9 @@ PassRefPtr<CSSRule> StyleRuleBase::createCSSOMWrapper(CSSStyleSheet* parentSheet
     case Supports:
         rule = CSSSupportsRule::create(static_cast<StyleRuleSupports*>(self), parentSheet);
         break;
-#if ENABLE(CSS_REGIONS)
     case Region:
         rule = WebKitCSSRegionRule::create(static_cast<StyleRuleRegion*>(self), parentSheet);
         break;
-#endif
     case Import:
         rule = CSSImportRule::create(static_cast<StyleRuleImport*>(self), parentSheet);
         break;
@@ -250,9 +233,6 @@ PassRefPtr<CSSRule> StyleRuleBase::createCSSOMWrapper(CSSStyleSheet* parentSheet
     case Unknown:
     case Charset:
     case Keyframe:
-#if !ENABLE(CSS_REGIONS)
-    case Region:
-#endif
         ASSERT_NOT_REACHED();
         return 0;
     }