Replace ASSERT with DCHECK in core/

third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.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/offscreencanvas/OffscreenCanvas.h"
 
 #include <memory>
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/fileapi/Blob.h"
@@ skipping 60 matching lines @@
       context_->Reset();
     }
   }
   size_ = size;
   if (frame_dispatcher_) {
     frame_dispatcher_->Reshape(size_.Width(), size_.Height());
   }
 }
 
 void OffscreenCanvas::SetNeutered() {
-  ASSERT(!context_);
+  DCHECK(!context_);
   is_neutered_ = true;
   size_.SetWidth(0);
   size_.SetHeight(0);
 }
 
 ImageBitmap* OffscreenCanvas::transferToImageBitmap(
     ScriptState* script_state,
     ExceptionState& exception_state) {
   if (is_neutered_) {
     exception_state.ThrowDOMException(
@@ skipping 110 matching lines @@
     int type) {
   ASSERT(type < CanvasRenderingContext::kContextTypeCount);
   return RenderingContextFactories()[type].get();
 }
 
 void OffscreenCanvas::RegisterRenderingContextFactory(
     std::unique_ptr<CanvasRenderingContextFactory> rendering_context_factory) {
   CanvasRenderingContext::ContextType type =
       rendering_context_factory->GetContextType();
   ASSERT(type < CanvasRenderingContext::kContextTypeCount);
-  ASSERT(!RenderingContextFactories()[type]);
+  DCHECK(!RenderingContextFactories()[type]);
   RenderingContextFactories()[type] = std::move(rendering_context_factory);
 }
 
 bool OffscreenCanvas::OriginClean() const {
   return origin_clean_ && !disable_reading_from_canvas_;
 }
 
 bool OffscreenCanvas::IsPaintable() const {
   if (!context_)
     return ImageBuffer::CanCreateImageBuffer(size_);
@@ skipping 179 matching lines @@
 }
 
 DEFINE_TRACE(OffscreenCanvas) {
   visitor->Trace(context_);
   visitor->Trace(execution_context_);
   visitor->Trace(commit_promise_resolver_);
   EventTargetWithInlineData::Trace(visitor);
 }
 
 }  // namespace blink