Use precaching for more data: urls than just images.

Source/core/fetch/RawResource.cpp

Index: Source/core/fetch/RawResource.cpp
diff --git a/Source/core/fetch/RawResource.cpp b/Source/core/fetch/RawResource.cpp
index 918723de7eac9868dcab67e6a32998d626fb8848..ece0478f99e5bb321d49d1299293b87df9191c60 100644
--- a/Source/core/fetch/RawResource.cpp
+++ b/Source/core/fetch/RawResource.cpp
@@ -31,31 +31,9 @@
 #include "core/fetch/ResourceClientWalker.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/fetch/ResourceLoader.h"
-#include "core/fetch/SubstituteData.h"
-#include "platform/SharedBuffer.h"
 
 namespace blink {
 
-void RawResource::preCacheSubstituteDataForMainResource(const FetchRequest& request, ResourceFetcher* fetcher, const SubstituteData& substituteData)
-{
-    const String cacheIdentifier = fetcher->getCacheIdentifier();
-    const KURL& url = request.url();
-    if (Resource* oldResource = memoryCache()->resourceForURL(url, cacheIdentifier))
-        memoryCache()->remove(oldResource);
-
-    ResourceResponse response(url, substituteData.mimeType(), substituteData.content()->size(), substituteData.textEncoding(), emptyString());
-    ResourcePtr<Resource> resource = new RawResource(request.resourceRequest(), Resource::MainResource);
-    resource->setNeedsSynchronousCacheHit(substituteData.forceSynchronousLoad());
-    resource->setOptions(request.options());
-    resource->setDataBufferingPolicy(BufferData);
-    resource->responseReceived(response, nullptr);
-    if (substituteData.content()->size())
-        resource->setResourceBuffer(substituteData.content());
-    resource->setCacheIdentifier(cacheIdentifier);
-    resource->finish();
-    memoryCache()->add(resource.get());
-}
-
 ResourcePtr<Resource> RawResource::fetchSynchronously(FetchRequest& request, ResourceFetcher* fetcher)
 {
     request.mutableResourceRequest().setTimeoutInterval(10);
@@ -85,9 +63,7 @@ ResourcePtr<RawResource> RawResource::fetchMainResource(FetchRequest& request, R
     ASSERT(request.resourceRequest().frameType() != WebURLRequest::FrameTypeNone);
     ASSERT(request.resourceRequest().requestContext() == WebURLRequest::RequestContextForm || request.resourceRequest().requestContext() == WebURLRequest::RequestContextFrame || request.resourceRequest().requestContext() == WebURLRequest::RequestContextHyperlink || request.resourceRequest().requestContext() == WebURLRequest::RequestContextIframe || request.resourceRequest().requestContext() == WebURLRequest::RequestContextInternal || request.resourceRequest().requestContext() == WebURLRequest::RequestContextLocation);
 
-    if (substituteData.isValid())
-        preCacheSubstituteDataForMainResource(request, fetcher, substituteData);
-    return toRawResource(fetcher->requestResource(request, RawResourceFactory(Resource::MainResource)));
+    return toRawResource(fetcher->requestResource(request, RawResourceFactory(Resource::MainResource), substituteData));
 }
 
 ResourcePtr<RawResource> RawResource::fetchMedia(FetchRequest& request, ResourceFetcher* fetcher)