Bug 1877541 - WebGL about:support prints per-context inProcess/outOfProcess bool status. r=gfx-reviewers,lsalzman

Differential Revision: https://phabricator.services.mozilla.com/D200065

dom/canvas/ClientWebGLContext.cpp

@@ -2405,12 +2405,15 @@ void ClientWebGLContext::GetParameter(JSContext* cx, GLenum pname,
   if (asString) {
     const auto maybe = GetString(pname);
     if (maybe) {
-      auto str = *maybe;
+      auto str = std::string{};
       if (pname == dom::MOZ_debug_Binding::WSI_INFO) {
-        nsPrintfCString more("\nIsWebglOutOfProcessEnabled: %i",
-                             int(IsWebglOutOfProcessEnabled()));
-        str += more.BeginReading();
+        const auto& outOfProcess = mNotLost->outOfProcess;
+        const auto& inProcess = mNotLost->inProcess;
+        str += PrintfStdString("outOfProcess: %s\ninProcess: %s\n",
+                               ToChars(bool(outOfProcess)),
+                               ToChars(bool(inProcess)));
       }
+      str += *maybe;
       retval.set(StringValue(cx, str.c_str(), rv));
     }
   } else {

dom/canvas/WebGLTypes.h

@@ -1273,6 +1273,20 @@ struct IndexedBufferBinding final {
   uint64_t ByteCount() const;
 };
 
+// -
+
+template <class... Args>
+inline std::string PrintfStdString(const char* const format,
+                                   const Args&... args) {
+  const auto nsStr = nsPrintfCString(format, args...);
+  return ToString(nsStr);
+}
+
+inline const char* ToChars(const bool val) {
+  if (val) return "true";
+  return "false";
+}
+
 }  // namespace mozilla
 
 #endif