Introduce WebCachePolicy to merge cache policy enums

content/renderer/fetchers/resource_fetcher_impl.cc

Index: content/renderer/fetchers/resource_fetcher_impl.cc
diff --git a/content/renderer/fetchers/resource_fetcher_impl.cc b/content/renderer/fetchers/resource_fetcher_impl.cc
index b48ad21d89df43dcfd6cf1429e5e6f6aa8ee8d37..fa58f999c84b653d5f6255cfe297f0068f43d0ab 100644
--- a/content/renderer/fetchers/resource_fetcher_impl.cc
+++ b/content/renderer/fetchers/resource_fetcher_impl.cc
@@ -76,8 +76,7 @@ void ResourceFetcherImpl::SetSkipServiceWorker(bool skip_service_worker) {
   request_.setSkipServiceWorker(skip_service_worker);
 }
 
-void ResourceFetcherImpl::SetCachePolicy(
-    blink::WebURLRequest::CachePolicy policy) {
+void ResourceFetcherImpl::SetCachePolicy(blink::WebCachePolicy policy) {
   DCHECK(!request_.isNull());
   DCHECK(!loader_);