Basic HTTP pipelining support

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index aacd144081185b5e7ec7fc5db9fab84c9109963b..283849c711eb808570b0e64c73544611952977fc 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -450,6 +450,11 @@ const char kEnableFastback[]                = "enable-fastback";
 // for example page cycler and layout tests. See bug 1157243.
 const char kEnableFileCookies[]             = "enable-file-cookies";
 
+// Enable HTTP pipelining. Attempt to pipeline HTTP connections. Heuristics will
+// try to figure out if pipelining can be used for a given host and request.
+// Without this flag, pipelining will never be used.
+const char kEnableHttpPipelining[]          = "enable-http-pipelining";
+
 // Enables improved SafeBrowsing download protection.
 const char kEnableImprovedDownloadProtection[] =
     "enable-improved-download-protection";