*** DO NOT LAND *** Remove regions support, keeping a bare minimum to support "region-based"...

Source/core/core.gypi

Index: Source/core/core.gypi
diff --git a/Source/core/core.gypi b/Source/core/core.gypi
index 7181e6d30a23dcda61540dacfe0300bddd30f86f..ed2148b5e7d8ec4477a6222310f7123ffac9282b 100644
--- a/Source/core/core.gypi
+++ b/Source/core/core.gypi
@@ -43,7 +43,6 @@
             'css/WebKitCSSFilterRule.idl',
             'css/WebKitCSSFilterValue.idl',
             'css/WebKitCSSMatrix.idl',
-            'css/WebKitCSSRegionRule.idl',
             'css/WebKitCSSTransformValue.idl',
             'dom/Attr.idl',
             'dom/CDATASection.idl',
@@ -85,8 +84,6 @@
             'dom/TouchList.idl',
             'dom/TreeWalker.idl',
             'dom/URL.idl',
-            'dom/WebKitNamedFlow.idl',
-            'dom/WebKitNamedFlowCollection.idl',
             'dom/XMLDocument.idl',
             'dom/shadow/ShadowRoot.idl',
             'events/AutocompleteErrorEvent.idl',
@@ -700,8 +697,6 @@
             'css/CSSProperty.cpp',
             'css/CSSPropertySourceData.cpp',
             'css/CSSReflectValue.cpp',
-            'css/CSSRegionRule.cpp',
-            'css/CSSRegionRule.h',
             'css/CSSRule.cpp',
             'css/CSSRule.h',
             'css/CSSRuleList.cpp',
@@ -1489,10 +1484,6 @@
             'rendering/RenderMultiColumnFlowThread.h',
             'rendering/RenderMultiColumnSet.cpp',
             'rendering/RenderMultiColumnSet.h',
-            'rendering/RenderNamedFlowFragment.cpp',
-            'rendering/RenderNamedFlowFragment.h',
-            'rendering/RenderNamedFlowThread.cpp',
-            'rendering/RenderNamedFlowThread.h',
             'rendering/RenderObject.cpp',
             'rendering/RenderObjectChildList.cpp',
             'rendering/RenderPart.cpp',
@@ -1902,8 +1893,6 @@
             'dom/DOMException.cpp',
             'dom/DOMException.h',
             'dom/DOMImplementation.cpp',
-            'dom/DOMNamedFlowCollection.cpp',
-            'dom/DOMNamedFlowCollection.h',
             'dom/DOMSettableTokenList.cpp',
             'dom/DOMSettableTokenList.h',
             'dom/DOMStringList.cpp',
@@ -1957,10 +1946,6 @@
             'dom/MutationObserverRegistration.h',
             'dom/MutationRecord.cpp',
             'dom/MutationRecord.h',
-            'dom/NamedFlow.cpp',
-            'dom/NamedFlow.h',
-            'dom/NamedFlowCollection.cpp',
-            'dom/NamedFlowCollection.h',
             'dom/NamedNodeMap.cpp',
             'dom/NamedNodesCollection.cpp',
             'dom/NamedNodesCollection.h',