Enable ServerTiming support

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

Index: third_party/WebKit/Source/platform/network/HTTPParsers.h
diff --git a/third_party/WebKit/Source/platform/network/HTTPParsers.h b/third_party/WebKit/Source/platform/network/HTTPParsers.h
index a2094bf3b2d7c6d2df5fce7b3c6384596b635734..98bbe909be9cbe68ee28b08a636ee1c56091aacb 100644
--- a/third_party/WebKit/Source/platform/network/HTTPParsers.h
+++ b/third_party/WebKit/Source/platform/network/HTTPParsers.h
@@ -88,6 +88,17 @@ struct CacheControlHeader {
         maxAge(0.0) {}
 };
 
+struct ServerTimingHeader {
+  String metric;
+  double duration;
+  String description;
+
+  ServerTimingHeader(String metric, double duration, String description)
+      : metric(metric), duration(duration), description(description) {}
+};
+
+using ServerTimingHeaderVector = Vector<std::unique_ptr<ServerTimingHeader>>;
+
 PLATFORM_EXPORT ContentDispositionType getContentDispositionType(const String&);
 PLATFORM_EXPORT bool isValidHTTPHeaderValue(const String&);
 PLATFORM_EXPORT bool isValidHTTPFieldContentRFC7230(const String&);
@@ -169,6 +180,11 @@ PLATFORM_EXPORT bool parseContentRangeHeaderFor206(const String& contentRange,
                                                    int64_t* lastBytePosition,
                                                    int64_t* instanceLength);
 
+PLATFORM_EXPORT std::unique_ptr<ServerTimingHeaderVector>
+parseServerTimingHeader(const String&);
+
+PLATFORM_EXPORT String checkDoubleQuotedString(const String&);
+
 }  // namespace blink
 
 #endif