From 1ed3cff5a73e974b56dd116cbfd90a0bdf309c83 Mon Sep 17 00:00:00 2001
From: Ken Russell <kbrussel@alum.mit.edu>
Date: Tue, 11 Aug 2020 12:52:54 -0700
Subject: [PATCH] Support WebKit's MiniBrowser in webglHarnessCollectGarbage().
 (#3137)

This allows the expando-loss.html and expando-loss-2.html tests to be
run correctly in the MiniBrowser with the following two environment
variables set:
  export JSC_useDollarVM=1
  export __XPC_JSC_useDollarVM=1

Thanks to Yusuke Suzuki from Apple for this tip.
---
 conformance-suites/2.0.0/js/js-test-pre.js | 8 ++++++++
 sdk/tests/js/js-test-pre.js                | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/conformance-suites/2.0.0/js/js-test-pre.js b/conformance-suites/2.0.0/js/js-test-pre.js
index e1e70188fb..626440a566 100644
--- a/conformance-suites/2.0.0/js/js-test-pre.js
+++ b/conformance-suites/2.0.0/js/js-test-pre.js
@@ -708,6 +708,14 @@ function webglHarnessCollectGarbage() {
         return;
     }
 
+    // WebKit's MiniBrowser with the following environment variables set:
+    //   export JSC_useDollarVM=1
+    //   export __XPC_JSC_useDollarVM=1
+    if (window.$vm) {
+        window.$vm.gc();
+        return;
+    }
+
     function gcRec(n) {
         if (n < 1)
             return {};
diff --git a/sdk/tests/js/js-test-pre.js b/sdk/tests/js/js-test-pre.js
index 8a3cede5a0..b6202a2789 100644
--- a/sdk/tests/js/js-test-pre.js
+++ b/sdk/tests/js/js-test-pre.js
@@ -737,6 +737,14 @@ function webglHarnessCollectGarbage() {
         return;
     }
 
+    // WebKit's MiniBrowser with the following environment variables set:
+    //   export JSC_useDollarVM=1
+    //   export __XPC_JSC_useDollarVM=1
+    if (window.$vm) {
+        window.$vm.gc();
+        return;
+    }
+
     function gcRec(n) {
         if (n < 1)
             return {};