Fix presubmit problem.

Review URL: http://codereview.chromium.org/6526048

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6820 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen.cc

@@ -3763,10 +3763,11 @@ HInstruction* HGraphBuilder::BuildStoreKeyedFastElement(HValue* object,
 }
 
 
-HInstruction* HGraphBuilder::BuildStoreKeyedPixelArrayElement(HValue* object,
-                                                              HValue* key,
-                                                              HValue* val,
-                                                              Expression* expr) {
+HInstruction* HGraphBuilder::BuildStoreKeyedPixelArrayElement(
+    HValue* object,
+    HValue* key,
+    HValue* val,
+    XExpression* expr) {
   ASSERT(expr->IsMonomorphic());
   AddInstruction(new HCheckNonSmi(object));
   Handle<Map> map = expr->GetMonomorphicReceiverType();