Replace ASSERT with DHCECK_op in platform/heap

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

 // Copyright 2016 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 SelfKeepAlive_h
 #define SelfKeepAlive_h
 
 #include "platform/heap/Persistent.h"
 #include "platform/wtf/Allocator.h"
 #include "platform/wtf/Assertions.h"
@@ skipping 43 matching lines @@
     Assign(self);
     return *this;
   }
 
   void Clear() { keep_alive_.Clear(); }
 
   explicit operator bool() const { return keep_alive_; }
 
  private:
   void Assign(Self* self) {
-    ASSERT(!keep_alive_ || keep_alive_.Get() == self);
+    DCHECK(!keep_alive_ || keep_alive_.Get() == self);
     keep_alive_ = self;
   }
 
   GC_PLUGIN_IGNORE("420515")
   Persistent<Self> keep_alive_;
 };
 
 }  // namespace blink
 
 #endif  // SelfKeepAlive_h