Replace ASSERT with DHCECK_op in platform/heap

third_party/WebKit/Source/platform/heap/PersistentNode.h

Index: third_party/WebKit/Source/platform/heap/PersistentNode.h
diff --git a/third_party/WebKit/Source/platform/heap/PersistentNode.h b/third_party/WebKit/Source/platform/heap/PersistentNode.h
index 84ef3ce745898f8c9d0ddd3fd6f56e428d1338cc..9ed41b0db03c42f9093034a87bf8e58ca1d55606 100644
--- a/third_party/WebKit/Source/platform/heap/PersistentNode.h
+++ b/third_party/WebKit/Source/platform/heap/PersistentNode.h
@@ -21,7 +21,7 @@ class PersistentNode final {
   DISALLOW_NEW();
 
  public:
-  PersistentNode() : self_(nullptr), trace_(nullptr) { ASSERT(IsUnused()); }
+  PersistentNode() : self_(nullptr), trace_(nullptr) { DCHECK(IsUnused()); }
 
 #if DCHECK_IS_ON()
   ~PersistentNode() {
@@ -29,7 +29,7 @@ class PersistentNode final {
     // without clearing persistent handles that the thread created.
     // We don't enable the assert for the main thread because the
     // main thread finishes without clearing all persistent handles.
-    ASSERT(IsMainThread() || IsUnused());
+    DCHECK(IsMainThread() || IsUnused());
   }
 #endif
 
@@ -45,28 +45,28 @@ class PersistentNode final {
   // type of the most specific child and calls trace directly. See
   // TraceMethodDelegate in Visitor.h for how this is done.
   void TracePersistentNode(Visitor* visitor) {
-    ASSERT(!IsUnused());
-    ASSERT(trace_);
+    DCHECK(!IsUnused());
+    DCHECK(trace_);
     trace_(visitor, self_);
   }
 
   void Initialize(void* self, TraceCallback trace) {
-    ASSERT(IsUnused());
+    DCHECK(IsUnused());
     self_ = self;
     trace_ = trace;
   }
 
   void SetFreeListNext(PersistentNode* node) {
-    ASSERT(!node || node->IsUnused());
+    DCHECK(!node || node->IsUnused());
     self_ = node;
     trace_ = nullptr;
-    ASSERT(IsUnused());
+    DCHECK(IsUnused());
   }
 
   PersistentNode* FreeListNext() {
-    ASSERT(IsUnused());
+    DCHECK(IsUnused());
     PersistentNode* node = reinterpret_cast<PersistentNode*>(self_);
-    ASSERT(!node || node->IsUnused());
+    DCHECK(!node || node->IsUnused());
     return node;
   }
 
@@ -121,11 +121,11 @@ class PLATFORM_EXPORT PersistentRegion final {
 #endif
     if (UNLIKELY(!free_list_head_))
       EnsurePersistentNodeSlots(self, trace);
-    ASSERT(free_list_head_);
+    DCHECK(free_list_head_);
     PersistentNode* node = free_list_head_;
     free_list_head_ = free_list_head_->FreeListNext();
     node->Initialize(self, trace);
-    ASSERT(!node->IsUnused());
+    DCHECK(!node->IsUnused());
     return node;
   }