CSP: Move parsing a document's CSP to DocumentLoader::responseReceived.

Source/core/loader/DocumentLoader.h

Index: Source/core/loader/DocumentLoader.h
diff --git a/Source/core/loader/DocumentLoader.h b/Source/core/loader/DocumentLoader.h
index 9b59f73a38da2a06803d426362e3eed02ae1cfe5..b3d6e8a2c78d8e6b9791514557db331a21a99d41 100644
--- a/Source/core/loader/DocumentLoader.h
+++ b/Source/core/loader/DocumentLoader.h
@@ -33,6 +33,7 @@
 #include "core/fetch/RawResource.h"
 #include "core/fetch/ResourceLoaderOptions.h"
 #include "core/fetch/ResourcePtr.h"
+#include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/loader/DocumentLoadTiming.h"
 #include "core/loader/DocumentWriter.h"
 #include "core/loader/NavigationAction.h"
@@ -136,6 +137,8 @@ namespace blink {
         void clearRedirectChain();
         void appendRedirect(const KURL&);
 
+        PassRefPtr<ContentSecurityPolicy> releaseContentSecurityPolicy() { return m_contentSecurityPolicy.release(); }
+
     protected:
         DocumentLoader(LocalFrame*, const ResourceRequest&, const SubstituteData&);
 
@@ -165,6 +168,7 @@ namespace blink {
         void willSendRequest(ResourceRequest&, const ResourceResponse&);
         void finishedLoading(double finishTime);
         void mainReceivedError(const ResourceError&);
+        void cancelLoadAfterXFrameOptionsOrCSPDenied(const ResourceResponse&);
         virtual void redirectReceived(Resource*, ResourceRequest&, const ResourceResponse&) OVERRIDE FINAL;
         virtual void updateRequest(Resource*, const ResourceRequest&) OVERRIDE FINAL;
         virtual void responseReceived(Resource*, const ResourceResponse&) OVERRIDE FINAL;
@@ -220,6 +224,8 @@ namespace blink {
 
         friend class ApplicationCacheHost;  // for substitute resource delivery
         OwnPtrWillBePersistent<ApplicationCacheHost> m_applicationCacheHost;
+
+        RefPtr<ContentSecurityPolicy> m_contentSecurityPolicy;
     };
 }