Revert of Changed CSSParserContext argument from * to & for null safety.

third_party/WebKit/Source/core/css/properties/CSSPropertyAPIContent.cpp

Index: third_party/WebKit/Source/core/css/properties/CSSPropertyAPIContent.cpp
diff --git a/third_party/WebKit/Source/core/css/properties/CSSPropertyAPIContent.cpp b/third_party/WebKit/Source/core/css/properties/CSSPropertyAPIContent.cpp
index b922d5174922a2a66d8da1dc035046d1947868ef..401b6250bde3374a62ba3fcf7d9e166f5bbd34ac 100644
--- a/third_party/WebKit/Source/core/css/properties/CSSPropertyAPIContent.cpp
+++ b/third_party/WebKit/Source/core/css/properties/CSSPropertyAPIContent.cpp
@@ -72,7 +72,7 @@
 
 const CSSValue* CSSPropertyAPIContent::parseSingleValue(
     CSSParserTokenRange& range,
-    const CSSParserContext& context) {
+    const CSSParserContext* context) {
   if (CSSPropertyParserHelpers::identMatches<CSSValueNone, CSSValueNormal>(
           range.peek().id()))
     return CSSPropertyParserHelpers::consumeIdent(range);
@@ -81,7 +81,7 @@
 
   do {
     CSSValue* parsedValue =
-        CSSPropertyParserHelpers::consumeImage(range, &context);
+        CSSPropertyParserHelpers::consumeImage(range, context);
     if (!parsedValue) {
       parsedValue = CSSPropertyParserHelpers::consumeIdent<
           CSSValueOpenQuote, CSSValueCloseQuote, CSSValueNoOpenQuote,
@@ -92,7 +92,7 @@
     if (!parsedValue) {
       if (range.peek().functionId() == CSSValueAttr) {
         parsedValue = consumeAttr(
-            CSSPropertyParserHelpers::consumeFunction(range), &context);
+            CSSPropertyParserHelpers::consumeFunction(range), context);
       } else if (range.peek().functionId() == CSSValueCounter) {
         parsedValue = consumeCounterContent(
             CSSPropertyParserHelpers::consumeFunction(range), false);