Move CanonicalCookie into separate files

net/cookies/parsed_cookie.h

Index: net/cookies/parsed_cookie.h
diff --git a/net/cookies/parsed_cookie.h b/net/cookies/parsed_cookie.h
index 6f8e4ef72012a1b05bc5b41e4377f1ce5a977dd3..358561d659c0f843686673a78f8e60dcfd2d2948 100644
--- a/net/cookies/parsed_cookie.h
+++ b/net/cookies/parsed_cookie.h
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "base/basictypes.h"
+#include "base/time.h"
 #include "net/base/net_export.h"
 
 namespace net {
@@ -86,6 +87,9 @@ class NET_EXPORT ParsedCookie {
   static std::string ParseTokenString(const std::string& token);
   static std::string ParseValueString(const std::string& value);
 
+  // Parses the string with the cookie time (very forgivingly).
+  static base::Time ParseCookieTime(const std::string& time_string);
+
  private:
   static const char kTerminator[];
   static const int  kTerminatorLen;