Block renderer-initiated main frame navigations to data URLs

third_party/WebKit/Source/platform/network/NetworkUtils.h

Index: third_party/WebKit/Source/platform/network/NetworkUtils.h
diff --git a/third_party/WebKit/Source/platform/network/NetworkUtils.h b/third_party/WebKit/Source/platform/network/NetworkUtils.h
index 995a99ed6375b1f36347d07dda4a598c9f490767..18a287911327ef0dcea59b15c7b8ca3ca3e033d3 100644
--- a/third_party/WebKit/Source/platform/network/NetworkUtils.h
+++ b/third_party/WebKit/Source/platform/network/NetworkUtils.h
@@ -34,6 +34,10 @@ PLATFORM_EXPORT PassRefPtr<SharedBuffer> ParseDataURLAndPopulateResponse(
     const KURL&,
     ResourceResponse&);
 
+// Returns true if the URL is a data URL and its MIME type is in the list of
+// supported/recognized MIME types.
+PLATFORM_EXPORT bool IsDataURLMimeTypeSupported(const KURL&);
+
 PLATFORM_EXPORT bool IsRedirectResponseCode(int);
 
 }  // NetworkUtils