Allow assertions to be enabled in Blink Release builds.

Source/core/rendering/ClipRectsCache.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ClipRectsCache_h
 #define ClipRectsCache_h
 
 #include "core/rendering/ClipRects.h"
 
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
 #include "core/rendering/RenderBox.h" // For OverlayScrollbarSizeRelevancy.
 #endif
 
 namespace WebCore {
 
 enum ClipRectsCacheSlot {
     // Relative to the ancestor treated as the root (e.g. transformed layer). Used for hit testing.
     RootRelativeClipRects,
 
     // Relative to the RenderView's layer. Used for compositing overlap testing.
     AbsoluteClipRects,
 
     // Relative to painting ancestor. Used for painting.
     PaintingClipRects,
     PaintingClipRectsIgnoringOverflowClip,
 
     NumberOfClipRectsCacheSlots,
     UncachedClipRects,
 };
 
 class ClipRectsCache {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     struct Entry {
         Entry()
             : root(0)
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
             , scrollbarRelevancy(IgnoreOverlayScrollbarSize)
 #endif
         {
         }
 
         const RenderLayer* root;
         RefPtr<ClipRects> clipRects;
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
         OverlayScrollbarSizeRelevancy scrollbarRelevancy;
 #endif
     };
 
     Entry& get(ClipRectsCacheSlot slot)
     {
         ASSERT(slot < NumberOfClipRectsCacheSlots);
         return m_entries[slot];
     }
 
     void clear(ClipRectsCacheSlot slot)
     {
         ASSERT(slot < NumberOfClipRectsCacheSlots);
         m_entries[slot] = Entry();
     }
 
 private:
     Entry m_entries[NumberOfClipRectsCacheSlots];
 };
 
 } // namespace WebCore
 
 #endif // ClipRectsCache_h