CookieMonster edge-case parsing improvements and tests.

net/base/cookie_monster.h

Index: net/base/cookie_monster.h
diff --git a/net/base/cookie_monster.h b/net/base/cookie_monster.h
index fef0e8fc1224f6b9d90aea45f6b3a431c0dcb46b..c9e48d753c30dea7429236c08f9d8d777be59f25 100644
--- a/net/base/cookie_monster.h
+++ b/net/base/cookie_monster.h
@@ -265,6 +265,10 @@ class CookieMonster::ParsedCookie {
   bool IsSecure() const { return secure_index_ != 0; }
   bool IsHttpOnly() const { return httponly_index_ != 0; }
 
+  // Return the number of attributes, for example, returning 2 for:
+  //   "BLAH=hah; path=/; domain=.google.com"
+  size_t NumberOfAttributes() const { return pairs_.size() - 1; }
+
   // For debugging only!
   std::string DebugString() const;