Revert 146170 - Adding a field trial to enable speculative resource prefetching learning.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
===================================================================
--- chrome/common/chrome_switches.cc	(revision 146220)
+++ chrome/common/chrome_switches.cc	(working copy)
@@ -612,6 +612,10 @@
 // Enable SPDY/3. This is a temporary testing flag.
 const char kEnableSpdy3[]                   = "enable-spdy3";
 
+// Enable speculative resource prefetching.
+const char kEnableSpeculativeResourcePrefetching[] =
+    "enable-speculative-resource-prefetching";
+
 // Enables the stacked tabstrip.
 const char kEnableStackedTabStrip[]         = "enable-stacked-tab-strip";
 
@@ -1185,17 +1189,6 @@
 // ClientSocketReusePolicy.
 const char kSocketReusePolicy[]             = "socket-reuse-policy";
 
-// Speculative resource prefetching.
-const char kSpeculativeResourcePrefetching[] =
-    "speculative-resource-prefetching";
-
-// Speculative resource prefetching is disabled.
-const char kSpeculativeResourcePrefetchingDisabled[] = "disabled";
-
-// Speculative resource prefetching will only learn about resources that need to
-// be prefetched but will not prefetch them.
-const char kSpeculativeResourcePrefetchingLearning[] = "learning";
-
 // Specifies the maximum SSL/TLS version ("ssl3", "tls1", "tls1.1", or
 // "tls1.2").
 const char kSSLVersionMax[]                 = "ssl-version-max";