Remove the flags for NetInfo JavaScript APIs.

The NetInfo network quality attributes have been enabled
since M-61. NetInfo saveData attribute has been enabled
since M-65.

Change-Id: Ie4b005834e92180d080391ea7d00f4e57c8c5df3
Bug: 723068,772566
Reviewed-on: https://chromium-review.googlesource.com/1172087Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Commit-Queue: Tarun Bansal <tbansal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582849}

third_party/blink/renderer/modules/netinfo/network_information.idl

@@ -31,10 +31,10 @@ typedef unsigned long long Milliseconds;
 ] interface NetworkInformation : EventTarget {
     [RuntimeEnabled=NetInfoDownlinkMax, MeasureAs=NetInfoType] readonly attribute ConnectionType type;
     [RuntimeEnabled=NetInfoDownlinkMax, MeasureAs=NetInfoDownlinkMax] readonly attribute Megabit downlinkMax;
-    [RuntimeEnabled=NetInfoEffectiveType, MeasureAs=NetInfoOnChange] attribute EventHandler onchange;
+    [MeasureAs=NetInfoOnChange] attribute EventHandler onchange;
     [RuntimeEnabled=NetInfoDownlinkMax, MeasureAs=NetInfoOnTypeChange] attribute EventHandler ontypechange;
-    [RuntimeEnabled=NetInfoEffectiveType, MeasureAs=NetInfoEffectiveType] readonly attribute EffectiveConnectionType effectiveType;
-    [RuntimeEnabled=NetInfoRtt, MeasureAs=NetInfoRtt] readonly attribute Milliseconds rtt;
-    [RuntimeEnabled=NetInfoDownlink, MeasureAs=NetInfoDownlink] readonly attribute Megabit downlink;
-    [RuntimeEnabled=NetInfoSaveData, MeasureAs=NetInfoSaveData] readonly attribute boolean saveData;
+    [MeasureAs=NetInfoEffectiveType] readonly attribute EffectiveConnectionType effectiveType;
+    [MeasureAs=NetInfoRtt] readonly attribute Milliseconds rtt;
+    [MeasureAs=NetInfoDownlink] readonly attribute Megabit downlink;
+    [MeasureAs=NetInfoSaveData] readonly attribute boolean saveData;
 };

third_party/blink/renderer/platform/runtime_enabled_features.json5

@@ -768,10 +768,6 @@
       name: "NestedWorkers",
       status: "stable",
     },
-    {
-      name: "NetInfoDownlink",
-      status: "stable",
-    },
     {
       name: "NetInfoDownlinkHeader",
       status: "stable",
@@ -780,26 +776,14 @@
       name: "NetInfoDownlinkMax",
       status: "stable",
     },
-    {
-      name: "NetInfoEffectiveType",
-      status: "stable",
-    },
     {
       name: "NetInfoEffectiveTypeHeader",
       status: "stable",
     },
-    {
-      name: "NetInfoRtt",
-      status: "stable",
-    },
     {
       name: "NetInfoRttHeader",
       status: "stable",
     },
-    {
-      name: "NetInfoSaveData",
-      status: "stable",
-    },
     {
       name: "NetworkService",
     },