Revert of Enable -Wdeprecated-register (except on CrOS).

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 6bbfb4b24e9a38c24b8db3d783b6389fe26e1f25..1d169b38b9c338cca9b691c09694c6a2238aa85a 100644
--- a/third_party/WebKit/Source/platform/ColorData.gperf
+++ b/third_party/WebKit/Source/platform/ColorData.gperf
@@ -3,13 +3,6 @@
 #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;
@@ -175,13 +168,9 @@
 yellow, 0xffffff00
 yellowgreen, 0xff9acd32
 %%
-
-#if defined(__clang__)
-#pragma clang diagnostic pop
-#endif
-
-const struct NamedColor* findColor(const char* str, unsigned len) {
-  return ColorDataHash::findColorImpl(str, len);
+const struct NamedColor* findColor(register const char* str, register unsigned len)
+{
+    return ColorDataHash::findColorImpl(str, len);
 }
 
 } // namespace blink