Replace ASSERT with DCHECK in modules/fetch.

third_party/WebKit/Source/modules/fetch/ResponseTest.cpp

Index: third_party/WebKit/Source/modules/fetch/ResponseTest.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/ResponseTest.cpp b/third_party/WebKit/Source/modules/fetch/ResponseTest.cpp
index 4d79646b8b4888aedc6a279f347ac744feda7d4e..30d4569b6aa080cc614e9eb93c7b3a1955df30f7 100644
--- a/third_party/WebKit/Source/modules/fetch/ResponseTest.cpp
+++ b/third_party/WebKit/Source/modules/fetch/ResponseTest.cpp
@@ -61,7 +61,7 @@ TEST(ServiceWorkerResponseTest, FromFetchResponseData) {
   urlList.push_back(url);
   fetchResponseData->setURLList(urlList);
   Response* response = Response::create(&page->document(), fetchResponseData);
-  ASSERT(response);
+  DCHECK(response);
   EXPECT_EQ(url, response->url());
 }
 
@@ -70,7 +70,7 @@ TEST(ServiceWorkerResponseTest, FromWebServiceWorkerResponse) {
   std::unique_ptr<WebServiceWorkerResponse> webResponse =
       createTestWebServiceWorkerResponse();
   Response* response = Response::create(scope.getScriptState(), *webResponse);
-  ASSERT(response);
+  DCHECK(response);
   ASSERT_EQ(1u, webResponse->urlList().size());
   EXPECT_EQ(webResponse->urlList()[0], response->url());
   EXPECT_EQ(webResponse->status(), response->status());