Enable -Wdeprecated-register (except on CrOS and 32-bit Linux).

third_party/WebKit/Source/platform/ColorData.gperf

Index: third_party/WebKit/Source/platform/ColorData.gperf
diff --git a/third_party/WebKit/Source/platform/ColorData.gperf b/third_party/WebKit/Source/platform/ColorData.gperf
index 1d169b38b9c338cca9b691c09694c6a2238aa85a..6bbfb4b24e9a38c24b8db3d783b6389fe26e1f25 100644
--- a/third_party/WebKit/Source/platform/ColorData.gperf
+++ b/third_party/WebKit/Source/platform/ColorData.gperf
@@ -3,6 +3,13 @@
 #include <string.h>
 
 namespace blink {
+
+#if defined(__clang__)
+#pragma clang diagnostic push
+// TODO(thakis): Remove once we use a gperf that no longer produces "register".
+#pragma clang diagnostic ignored "-Wdeprecated-register"
+#endif
+
 %}
 %struct-type
 struct NamedColor;
@@ -168,9 +175,13 @@ whitesmoke, 0xfff5f5f5
 yellow, 0xffffff00
 yellowgreen, 0xff9acd32
 %%
-const struct NamedColor* findColor(register const char* str, register unsigned len)
-{
-    return ColorDataHash::findColorImpl(str, len);
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
+
+const struct NamedColor* findColor(const char* str, unsigned len) {
+  return ColorDataHash::findColorImpl(str, len);
 }
 
 } // namespace blink