Plumb net::ERR_ABORTED to Platform, so that it can be exposed to WebCore. This

will all ResourceError to create a cancallation error with the proper error
code, instead of having to call all the way out to RenderViewImpl.

This is required for https://codereview.chromium.org/14264012

BUG=none
TEST=none

Review URL: https://codereview.chromium.org/14297005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194436 0039d316-1c4b-4281-b951-d872f2087c98

webkit/glue/webkitplatformsupport_impl.cc

@@ -28,6 +28,7 @@
 #include "grit/webkit_chromium_resources.h"
 #include "grit/webkit_resources.h"
 #include "grit/webkit_strings.h"
+#include "net/base/net_errors.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebCookie.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebData.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebDiscardableMemory.h"
@@ -398,6 +399,10 @@ WebString WebKitPlatformSupportImpl::userAgent(const WebURL& url) {
   return WebString::fromUTF8(webkit_glue::GetUserAgent(url));
 }
 
+int WebKitPlatformSupportImpl::cancelledErrorCode() const {
+  return net::ERR_ABORTED;
+}
+
 void WebKitPlatformSupportImpl::getPluginList(bool refresh,
                                      WebPluginListBuilder* builder) {
   std::vector<webkit::WebPluginInfo> plugins;

webkit/glue/webkitplatformsupport_impl.h

@@ -83,6 +83,7 @@ class WEBKIT_GLUE_EXPORT WebKitPlatformSupportImpl :
   virtual WebKit::WebURLLoader* createURLLoader();
   virtual WebKit::WebSocketStreamHandle* createSocketStreamHandle();
   virtual WebKit::WebString userAgent(const WebKit::WebURL& url);
+  virtual int cancelledErrorCode() const;
   virtual void getPluginList(bool refresh, WebKit::WebPluginListBuilder*);
   virtual void decrementStatsCounter(const char* name);
   virtual void incrementStatsCounter(const char* name);