Consolidate read-only exception throwing for SVG*TearOffs

third_party/WebKit/Source/core/svg/SVGPreserveAspectRatioTearOff.cpp

Index: third_party/WebKit/Source/core/svg/SVGPreserveAspectRatioTearOff.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGPreserveAspectRatioTearOff.cpp b/third_party/WebKit/Source/core/svg/SVGPreserveAspectRatioTearOff.cpp
index 059f35b388e618bfc840908ea092def40544027c..708d7d3347f55331e3a6eccef3066a7680a6503f 100644
--- a/third_party/WebKit/Source/core/svg/SVGPreserveAspectRatioTearOff.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGPreserveAspectRatioTearOff.cpp
@@ -38,30 +38,28 @@ namespace blink {
 
 void SVGPreserveAspectRatioTearOff::setAlign(unsigned short align, ExceptionState& exceptionState)
 {
-    if (align == kSvgPreserveaspectratioUnknown || align > kSvgPreserveaspectratioXmaxymax) {
-        exceptionState.throwDOMException(NotSupportedError, "The alignment provided is invalid.");
+    if (isImmutable()) {
+        throwReadOnly(exceptionState);
         return;
     }
-    if (isImmutable()) {
-        exceptionState.throwDOMException(NoModificationAllowedError, "The attribute is read-only.");
+    if (align == kSvgPreserveaspectratioUnknown || align > kSvgPreserveaspectratioXmaxymax) {
+        exceptionState.throwDOMException(NotSupportedError, "The alignment provided is invalid.");
         return;
     }
-
     target()->setAlign(static_cast<SVGPreserveAspectRatio::SVGPreserveAspectRatioType>(align));
     commitChange();
 }
 
 void SVGPreserveAspectRatioTearOff::setMeetOrSlice(unsigned short meetOrSlice, ExceptionState& exceptionState)
 {
-    if (meetOrSlice == kSvgMeetorsliceUnknown || meetOrSlice > kSvgMeetorsliceSlice) {
-        exceptionState.throwDOMException(NotSupportedError, "The meetOrSlice provided is invalid.");
+    if (isImmutable()) {
+        throwReadOnly(exceptionState);
         return;
     }
-    if (isImmutable()) {
-        exceptionState.throwDOMException(NoModificationAllowedError, "The attribute is read-only.");
+    if (meetOrSlice == kSvgMeetorsliceUnknown || meetOrSlice > kSvgMeetorsliceSlice) {
+        exceptionState.throwDOMException(NotSupportedError, "The meetOrSlice provided is invalid.");
         return;
     }
-
     target()->setMeetOrSlice(static_cast<SVGPreserveAspectRatio::SVGMeetOrSliceType>(meetOrSlice));
     commitChange();
 }