Split 'CookieOptions' out into a .h/.cc file.

net/cookies/cookie_options.h

Index: net/cookies/cookie_options.h
diff --git a/net/cookies/cookie_options.h b/net/cookies/cookie_options.h
index a7ed5a9aac64eca34e4223799a698fdd5581ee43..a215d2256cf72c7accf767ac8491d8d2c103a064 100644
--- a/net/cookies/cookie_options.h
+++ b/net/cookies/cookie_options.h
@@ -7,6 +7,7 @@
 #ifndef NET_COOKIES_COOKIE_OPTIONS_H_
 #define NET_COOKIES_COOKIE_OPTIONS_H_
 
+#include "base/time/time.h"
 #include "url/gurl.h"
 
 namespace net {
@@ -21,10 +22,7 @@ class CookieOptions {
   //
   // If a first-party URL is set, then first-party cookies which match that URL
   // will be returned.
-  CookieOptions()
-      : exclude_httponly_(true),
-        include_first_party_only_(false),
-        server_time_() {}
+  CookieOptions();
 
   void set_exclude_httponly() { exclude_httponly_ = true; }
   void set_include_httponly() { exclude_httponly_ = false; }