Mark several svg tests NeedsRebaseline on XP

LayoutTests/TestExpectations

Index: LayoutTests/TestExpectations
diff --git a/LayoutTests/TestExpectations b/LayoutTests/TestExpectations
index 4eeea3306d977b29d96fa5cbda14be0c0a9ecb0e..6578b7975cd4498640622bc5ce54925c0720f38b 100644
--- a/LayoutTests/TestExpectations
+++ b/LayoutTests/TestExpectations
@@ -817,6 +817,11 @@ crbug.com/399099 [ Linux ] crypto/subtle/pbkdf2/deriveBits-rfc6070-test-vectors.
 crbug.com/399099 [ Linux ] crypto/subtle/pbkdf2/deriveKey-aes.html [ Failure Pass ]
 crbug.com/399099 [ Linux ] crypto/subtle/pbkdf2/deriveKey-failures.html [ Failure Pass ]
 
+crbug.com/497950 [ XP ] svg/as-background-image/svg-background-partial-redraw.html [ NeedsRebaseline ]
+crbug.com/497950 [ XP ] svg/batik/text/textLength.svg [ NeedsRebaseline ]
+crbug.com/497950 [ XP ] svg/text/text-viewbox-rescale.html [ NeedsRebaseline ]
+crbug.com/497950 [ XP ] svg/zoom/page/zoom-svg-float-border-padding.xml [ NeedsRebaseline ]
+
 # There are some unresolved problems with the teardown of WebWorkers that make
 # the "abandon" WebCrypto tests flaky-crash. This flakiness can also affect the
 # tests run immediately afterwards (the two AES-CBC decrypt tests).