replace COMPILE_ASSERT with static assert in wtf/

Source/wtf/ListHashSet.h

Index: Source/wtf/ListHashSet.h
diff --git a/Source/wtf/ListHashSet.h b/Source/wtf/ListHashSet.h
index 52b2906becfdcfe3026b9ffbaab3ba5ee5f68678..a395bbe5421f1b438212073ee31c6b9de098e924 100644
--- a/Source/wtf/ListHashSet.h
+++ b/Source/wtf/ListHashSet.h
@@ -360,7 +360,7 @@ namespace WTF {
 
         void* operator new(size_t, NodeAllocator* allocator)
         {
-            COMPILE_ASSERT(sizeof(ListHashSetNode) == sizeof(ListHashSetNodeBase<ValueArg>), PleaseAddAnyFieldsToTheBase);
+            static_assert(sizeof(ListHashSetNode) == sizeof(ListHashSetNodeBase<ValueArg>), "Please add any fields to the base");

[Nico, 2014/12/16 17:56:28]

uber nit: I'd lower case the first character of the message, with the reasoning
that compiler diagnostics are all lower case too (except for if the first word
is a class name)

[Mostyn Bramley-Moore, 2014/12/16 19:00:37]

Done.  Should we add this to the style guide?

             return allocator->allocateNode();
         }
 
@@ -695,7 +695,7 @@ namespace WTF {
     template<typename T, size_t inlineCapacity, typename U, typename V>
     inline void ListHashSet<T, inlineCapacity, U, V>::finalize()
     {
-        COMPILE_ASSERT(!Allocator::isGarbageCollected, FinalizeOnHeapAllocatedListHashSetShouldNeverBeCalled);
+        static_assert(!Allocator::isGarbageCollected, "Heap allocated ListHashSet should never call finalize()");
         deleteAllNodes();
     }
 
@@ -996,7 +996,7 @@ namespace WTF {
     template<typename T, size_t inlineCapacity, typename U, typename V>
     void ListHashSet<T, inlineCapacity, U, V>::trace(typename Allocator::Visitor* visitor)
     {
-        COMPILE_ASSERT(HashTraits<T>::weakHandlingFlag == NoWeakHandlingInCollections, ListHashSetDoesNotSupportWeakness);
+        static_assert(HashTraits<T>::weakHandlingFlag == NoWeakHandlingInCollections, "ListHashSetDoesNotSupportWeakness");

[Nico, 2014/12/16 17:56:28]

intentionally no spaces here?

[Mostyn Bramley-Moore, 2014/12/16 19:00:37]

Fixed.

         // This marks all the nodes and their contents live that can be
         // accessed through the HashTable. That includes m_head and m_tail
         // so we do not have to explicitly trace them here.