Inline HashTable::find() methods for performance

Source/wtf/HashTable.h

Index: Source/wtf/HashTable.h
diff --git a/Source/wtf/HashTable.h b/Source/wtf/HashTable.h
index d88038b65f7d37f38f0bfc9b2424ce492792f5b5..9b195d863dcceb4640e47ba739deb3258456a825 100644
--- a/Source/wtf/HashTable.h
+++ b/Source/wtf/HashTable.h
@@ -451,15 +451,15 @@ namespace WTF {
     template<typename HashTranslator, typename T>
     inline Value* HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::lookup(const T& key)
     {
+        ValueType* table = m_table;
+        if (!table)
+            return 0;
+
         int k = 0;
         int sizeMask = m_tableSizeMask;
-        ValueType* table = m_table;
         unsigned h = HashTranslator::hash(key);
         int i = h & sizeMask;
 
-        if (!table)
-            return 0;
-
 #if DUMP_HASHTABLE_STATS
         atomicIncrement(&HashTableStats::numAccesses);
         int probeCount = 0;
@@ -795,11 +795,8 @@ namespace WTF {
 
     template<typename Key, typename Value, typename Extractor, typename HashFunctions, typename Traits, typename KeyTraits, typename Allocator>
     template <typename HashTranslator, typename T>
-    typename HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::iterator HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::find(const T& key)
+    inline typename HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::iterator HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::find(const T& key)
     {
-        if (!m_table)
-            return end();
-
         ValueType* entry = lookup<HashTranslator>(key);
         if (!entry)
             return end();
@@ -809,11 +806,8 @@ namespace WTF {
 
     template<typename Key, typename Value, typename Extractor, typename HashFunctions, typename Traits, typename KeyTraits, typename Allocator>
     template <typename HashTranslator, typename T>
-    typename HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::const_iterator HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::find(const T& key) const
+    inline typename HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::const_iterator HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::find(const T& key) const
     {
-        if (!m_table)
-            return end();
-
         ValueType* entry = const_cast<HashTable*>(this)->lookup<HashTranslator>(key);
         if (!entry)
             return end();
@@ -825,9 +819,6 @@ namespace WTF {
     template <typename HashTranslator, typename T>
     bool HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::contains(const T& key) const
     {
-        if (!m_table)
-            return false;
-
         return const_cast<HashTable*>(this)->lookup<HashTranslator>(key);
     }