Allow assertions to be enabled in Blink Release builds.

Source/core/editing/TextIterator.cpp

Index: Source/core/editing/TextIterator.cpp
diff --git a/Source/core/editing/TextIterator.cpp b/Source/core/editing/TextIterator.cpp
index 0898f2bae71f4423ccfdf505046a2429e77cd8fb..9ab164b2fa8bb1a449b2c8a479e50312380bef79 100644
--- a/Source/core/editing/TextIterator.cpp
+++ b/Source/core/editing/TextIterator.cpp
@@ -158,7 +158,7 @@ unsigned BitStack::size() const
 
 // --------
 
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
 
 static unsigned depthCrossingShadowBoundaries(Node* node)
 {
@@ -1276,7 +1276,7 @@ SimplifiedBackwardsTextIterator::SimplifiedBackwardsTextIterator(const Range* r,
     m_endNode = endNode;
     m_endOffset = endOffset;
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     // Need this just because of the assert.
     m_positionNode = endNode;
 #endif
@@ -1750,7 +1750,7 @@ UChar WordAwareIterator::characterAt(unsigned index) const
 
 static const size_t minimumSearchBufferSize = 8192;
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
 static bool searcherInUse;
 #endif
 
@@ -1774,7 +1774,7 @@ static UStringSearch* searcher()
 
 static inline void lockSearcher()
 {
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     ASSERT(!searcherInUse);
     searcherInUse = true;
 #endif
@@ -1782,7 +1782,7 @@ static inline void lockSearcher()
 
 static inline void unlockSearcher()
 {
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     ASSERT(searcherInUse);
     searcherInUse = false;
 #endif