Remove resource type-specific fetching logic from ResourceFetcher

Source/core/fetch/CSSStyleSheetResource.cpp

Index: Source/core/fetch/CSSStyleSheetResource.cpp
diff --git a/Source/core/fetch/CSSStyleSheetResource.cpp b/Source/core/fetch/CSSStyleSheetResource.cpp
index f63bc68c241819736812eac7b72d681b4324b090..5b4143c4a7c3023c8bae2706afb974e62d3fca7e 100644
--- a/Source/core/fetch/CSSStyleSheetResource.cpp
+++ b/Source/core/fetch/CSSStyleSheetResource.cpp
@@ -28,7 +28,9 @@
 #include "core/fetch/CSSStyleSheetResource.h"
 
 #include "core/css/StyleSheetContents.h"
+#include "core/fetch/FetchRequest.h"
 #include "core/fetch/ResourceClientWalker.h"
+#include "core/fetch/ResourceFetcher.h"
 #include "core/fetch/StyleSheetResourceClient.h"
 #include "platform/SharedBuffer.h"
 #include "platform/network/HTTPParsers.h"
@@ -36,6 +38,13 @@
 
 namespace blink {
 
+ResourcePtr<CSSStyleSheetResource> CSSStyleSheetResource::fetch(FetchRequest& request, ResourceFetcher* fetcher)
+{
+    ASSERT(request.resourceRequest().frameType() == WebURLRequest::FrameTypeNone);
+    request.mutableResourceRequest().setRequestContext(WebURLRequest::RequestContextStyle);
+    return toCSSStyleSheetResource(fetcher->requestResource(request, CSSStyleSheetResourceFactory()));
+}
+
 CSSStyleSheetResource::CSSStyleSheetResource(const ResourceRequest& resourceRequest, const String& charset)
     : StyleSheetResource(resourceRequest, CSSStyleSheet, "text/css", charset)
 {