Make sure that HttpRequestHeaders contains valid key-value pairs.

net/http/http_util.h

Index: net/http/http_util.h
diff --git a/net/http/http_util.h b/net/http/http_util.h
index 14117c00289d22bd54c28398c28fdb99eb72a59f..c3da65b343abd4e7a2d2dafccdd94d98075828f2 100644
--- a/net/http/http_util.h
+++ b/net/http/http_util.h
@@ -75,6 +75,12 @@ class NET_EXPORT HttpUtil {
   // named |name|.
   static bool IsSafeHeader(const std::string& name);
 
+  // Returns true if |name| is a valid HTTP header name.
+  static bool IsValidHeaderName(const std::string& name);
+
+  // Returns true if |value| is a valid HTTP header value.

[mmenke, 2014/08/25 16:32:44]

This isn't accurate.  It doesn't do a full validation (For example, it doesn't
check for control characters).

Maybe "Returns false if |value| contains vertical white space or NULs.  Does not
do a full validity check."

[robwu, 2014/08/25 18:58:29]

Done.

+  static bool IsValidHeaderValue(const std::string& value);
+
   // Strips all header lines from |headers| whose name matches
   // |headers_to_remove|. |headers_to_remove| is a list of null-terminated
   // lower-case header names, with array length |headers_to_remove_len|.