Replace ASSERT*() with DCHECK*() in core/fetch/ and core/loader/

third_party/WebKit/Source/core/loader/CrossOriginPreflightResultCache.cpp

Index: third_party/WebKit/Source/core/loader/CrossOriginPreflightResultCache.cpp
diff --git a/third_party/WebKit/Source/core/loader/CrossOriginPreflightResultCache.cpp b/third_party/WebKit/Source/core/loader/CrossOriginPreflightResultCache.cpp
index 9006fa586ff91a58dff62aa6a4ff3e5b25475a92..6c43f0e6236b4a46b2d8ddcc0b7dbb450d6a85b9 100644
--- a/third_party/WebKit/Source/core/loader/CrossOriginPreflightResultCache.cpp
+++ b/third_party/WebKit/Source/core/loader/CrossOriginPreflightResultCache.cpp
@@ -148,19 +148,19 @@ bool CrossOriginPreflightResultCacheItem::allowsRequest(StoredCredentials includ
 CrossOriginPreflightResultCache& CrossOriginPreflightResultCache::shared()
 {
     DEFINE_STATIC_LOCAL(CrossOriginPreflightResultCache, cache, ());
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     return cache;
 }
 
 void CrossOriginPreflightResultCache::appendEntry(const String& origin, const KURL& url, std::unique_ptr<CrossOriginPreflightResultCacheItem> preflightResult)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     m_preflightHashMap.set(std::make_pair(origin, url), std::move(preflightResult));
 }
 
 bool CrossOriginPreflightResultCache::canSkipPreflight(const String& origin, const KURL& url, StoredCredentials includeCredentials, const String& method, const HTTPHeaderMap& requestHeaders)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     CrossOriginPreflightResultHashMap::iterator cacheIt = m_preflightHashMap.find(std::make_pair(origin, url));
     if (cacheIt == m_preflightHashMap.end())
         return false;