Add AllowNetworkPrediction preference name and enum.

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index edf2729a9dad6c6042cf9471e93b82b74707551b..b45073a66f31b14f5e38f9bc0d4c0d2e0ed6cb65 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -497,8 +497,16 @@ const char kMultipleProfilePrefMigration[] =
 // of web pages, and resource prefetching.
 // NOTE: The "dns_prefetching.enabled" value is used so that historical user
 // preferences are not lost.
+// NOTE: This will be obsoleted per issue 334602.

[jkarlin, 2014/06/13 11:26:40]

Replace above with TODO(bnc): Remove kNetworkPredictionEnabled once
kAllowNetworkPrediction is functioning as per crbug.com/334602.

[Bence, 2014/06/13 13:49:06]

Done.

 const char kNetworkPredictionEnabled[] = "dns_prefetching.enabled";
 
+// An integer pref shows if prediction of network actions is allowed:
+// ALWAYS, NEVER, or WIFI_ONLY.

[jkarlin, 2014/06/13 11:26:40]

Suggest pointing to where the enum is defined
chrome::Predictor::NetworkPredictionOptions (after you move it) instead of
enumerating here.  That way we can change the values without updating this
comment.

[Bence, 2014/06/13 13:49:06]

Done.

+// Actions include DNS prefetching, TCP and SSL preconnection, prerendering
+// of web pages, and resource prefetching.
+// NOTE: This preference is not respected yet. See issue 334602.

[jkarlin, 2014/06/13 11:26:40]

Replace NOTE line above with:

TODO(bnc): Implement this preference as per crbug.com/334602.

[Bence, 2014/06/13 13:49:06]

Done.

+const char kAllowNetworkPrediction[] = "allow-network-prediction";
+
 // An integer representing the state of the default apps installation process.
 // This value is persisted in the profile's user preferences because the process
 // is async, and the user may have stopped chrome in the middle.  The next time