Revert "Create errors (especially cancellation errors) internally to WebCore, rather"

Source/WebKit/chromium/src/FrameLoaderClientImpl.h

Index: Source/WebKit/chromium/src/FrameLoaderClientImpl.h
diff --git a/Source/WebKit/chromium/src/FrameLoaderClientImpl.h b/Source/WebKit/chromium/src/FrameLoaderClientImpl.h
index a45765236d114366d642cded436c21e4ce46a7b2..6f1f18bff440d14d752481136c925a6cb45a3f3e 100644
--- a/Source/WebKit/chromium/src/FrameLoaderClientImpl.h
+++ b/Source/WebKit/chromium/src/FrameLoaderClientImpl.h
@@ -101,6 +101,7 @@ public:
     virtual void dispatchShow();
     virtual WebCore::PolicyAction policyForNewWindowAction(const WebCore::NavigationAction& action, const WTF::String& frame_name);
     virtual WebCore::PolicyAction decidePolicyForNavigationAction(const WebCore::NavigationAction& action, const WebCore::ResourceRequest& request);
+    virtual void dispatchUnableToImplementPolicy(const WebCore::ResourceError&);
     virtual void dispatchWillRequestResource(WebCore::CachedResourceRequest*);
     virtual void dispatchWillSendSubmitEvent(PassRefPtr<WebCore::FormState>);
     virtual void dispatchWillSubmitForm(PassRefPtr<WebCore::FormState>);
@@ -118,7 +119,14 @@ public:
     virtual void didDisplayInsecureContent();
     virtual void didRunInsecureContent(WebCore::SecurityOrigin*, const WebCore::KURL& insecureURL);
     virtual void didDetectXSS(const WebCore::KURL&, bool didBlockEntirePage);
+    virtual WebCore::ResourceError cancelledError(const WebCore::ResourceRequest&);
+    virtual WebCore::ResourceError cannotShowURLError(const WebCore::ResourceRequest&);
     virtual WebCore::ResourceError interruptedForPolicyChangeError(const WebCore::ResourceRequest&);
+    virtual WebCore::ResourceError cannotShowMIMETypeError(const WebCore::ResourceResponse&);
+    virtual WebCore::ResourceError fileDoesNotExistError(const WebCore::ResourceResponse&);
+    virtual WebCore::ResourceError pluginWillHandleLoadError(const WebCore::ResourceResponse&);
+    virtual bool shouldFallBack(const WebCore::ResourceError&);
+    virtual bool canHandleRequest(const WebCore::ResourceRequest&) const;
     virtual bool canShowMIMEType(const WTF::String& MIMEType) const;
     virtual WTF::String generatedMIMETypeForURLScheme(const WTF::String& URLScheme) const;
     virtual void didFinishLoad();