Ship and experiment with the Budget API

third_party/WebKit/Source/platform/RuntimeEnabledFeatures.json5

 {
   // http://dev.chromium.org/blink/runtime-enabled-features
   //
   // This list is used to generate RuntimeEnabledFeatures.h/cpp which contains
   // a class that stores static enablers for all experimental features.
 
   parameters: {
     // Each feature can be assigned a "status":
     // status=stable -> Enable this in all Blink configurations.  We are committed to these APIs indefinitely.
     // status=experimental -> In-progress features, Web Developers might play with, but are not on by default in stable.
@@ skipping 105 matching lines @@
     {
       name: "BlockLegacySubresources",
       status: "stable",
     },
     {
       name: "BroadcastChannel",
       status: "stable",
     },
     {
       name: "Budget",
+      status: "stable",

[johnme, 2017/05/24 12:08:44]

Why didn't
third_party/WebKit/LayoutTests/virtual/stable/webexposed/global-interface-listing-expected.txt
change now that BudgetService is exposed as stable? It looks like you
accidentally wrote to the per-platform
third_party/WebKit/LayoutTests/platform/win/virtual/stable/webexposed/global-interface-listing-expected.txt
instead.

[Peter Beverloo, 2017/05/24 14:35:42]

Because that file doesn't exist anymore.

+    },
+    {
+      name: "BudgetQuery",
+      origin_trial_feature_name: "BudgetQuery",
       status: "experimental",
     },
     {
       name: "CanMakePayment",
       status: "stable",
     },
     {
       name: "Canvas2dFixedRenderingMode",
       status: "test",
     },
@@ skipping 944 matching lines @@
     {
       name: "Worklet",
       status: "experimental",
     },
     {
       name: "XSLT",
       status: "stable",
     },
   ],
 }