Replace ASSERT with DHCECK_op in platform/heap

third_party/WebKit/Source/platform/heap/PagePool.cpp

Index: third_party/WebKit/Source/platform/heap/PagePool.cpp
diff --git a/third_party/WebKit/Source/platform/heap/PagePool.cpp b/third_party/WebKit/Source/platform/heap/PagePool.cpp
index 2277333d27e2a5f3021c615aaf1af1a9949427f2..4af09bca1f2a2890e6c3ca6a1c7a4e1694b6c0d8 100644
--- a/third_party/WebKit/Source/platform/heap/PagePool.cpp
+++ b/third_party/WebKit/Source/platform/heap/PagePool.cpp
@@ -21,7 +21,7 @@ PagePool::~PagePool() {
     while (PoolEntry* entry = pool_[index]) {
       pool_[index] = entry->next;
       PageMemory* memory = entry->data;
-      ASSERT(memory);
+      DCHECK(memory);
       delete memory;
       delete entry;
     }
@@ -41,7 +41,7 @@ PageMemory* PagePool::Take(int index) {
   while (PoolEntry* entry = pool_[index]) {
     pool_[index] = entry->next;
     PageMemory* memory = entry->data;
-    ASSERT(memory);
+    DCHECK(memory);
     delete entry;
     if (memory->Commit())
       return memory;