Replace ASSERT with DCHECK in core/

third_party/WebKit/Source/core/streams/ReadableStreamOperationsTest.cpp

 // Copyright 2015 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 "core/streams/ReadableStreamOperations.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptFunction.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8BindingForCore.h"
@@ skipping 30 matching lines @@
 ScriptValue NotReached::Call(ScriptValue) {
   EXPECT_TRUE(false) << "'Unreachable' code was reached";
   return ScriptValue();
 }
 
 class Iteration final : public GarbageCollectedFinalized<Iteration> {
  public:
   Iteration() : is_set_(false), is_done_(false), is_valid_(true) {}
 
   void Set(ScriptValue v) {
-    ASSERT(!v.IsEmpty());
+    DCHECK(!v.IsEmpty());
     is_set_ = true;
     v8::TryCatch block(v.GetScriptState()->GetIsolate());
     v8::Local<v8::Value> value;
     v8::Local<v8::Value> item = v.V8Value();
     if (!item->IsObject() ||
         !V8UnpackIteratorResult(v.GetScriptState(), item.As<v8::Object>(),
                                 &is_done_)
              .ToLocal(&value)) {
       is_valid_ = false;
       return;
@@ skipping 432 matching lines @@
   EXPECT_EQ("hello", it1->Value());
   EXPECT_TRUE(it2->IsSet());
   EXPECT_TRUE(it2->IsValid());
   EXPECT_FALSE(it2->IsDone());
   EXPECT_EQ("hello", it2->Value());
 }
 
 }  // namespace
 
 }  // namespace blink