Make cc's use of WTF::HashMap robust to key/value change

cc/CCLayerTreeHostImpl.cpp

 // Copyright 2011 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.
 
 #include "config.h"
 
 #include "CCLayerTreeHostImpl.h"
 
 #include "CCAppendQuadsData.h"
 #include "CCDamageTracker.h"
@@ skipping 367 matching lines @@
     // a cleaner way to get the contentBounds on the Impl side.
     if (!m_rootScrollLayerImpl || m_rootScrollLayerImpl->children().isEmpty())
         return IntSize();
     return m_rootScrollLayerImpl->children()[0]->contentBounds();
 }
 
 static inline CCRenderPass* findRenderPassById(CCRenderPass::Id renderPassId, const CCLayerTreeHostImpl::FrameData& frame)
 {
     CCRenderPassIdHashMap::const_iterator it = frame.renderPassesById.find(renderPassId);
     ASSERT(it != frame.renderPassesById.end());
+#if WTF_NEW_HASHMAP_ITERATORS_INTERFACE
+    return it->value.get();
+#else
     return it->second.get();
+#endif
 }
 
 static void removeRenderPassesRecursive(CCRenderPass::Id removeRenderPassId, CCLayerTreeHostImpl::FrameData& frame)
 {
     CCRenderPass* removeRenderPass = findRenderPassById(removeRenderPassId, frame);
     size_t removeIndex = frame.renderPasses.find(removeRenderPass);
 
     // The pass was already removed by another quad - probably the original, and we are the replica.
     if (removeIndex == notFound)
         return;
@@ skipping 864 matching lines @@
 
     CCScrollbarAnimationController* scrollbarController = layer->scrollbarAnimationController();
     if (scrollbarController && scrollbarController->animate(monotonicTime))
         m_client->setNeedsRedrawOnImplThread();
 
     for (size_t i = 0; i < layer->children().size(); ++i)
         animateScrollbarsRecursive(layer->children()[i].get(), monotonicTime);
 }
 
 } // namespace cc