LibJS+Everywhere: Allow Cell::initialize overrides to throw OOM errors

Note that as of this commit, there aren't any such throwers, and the
call site in Heap::allocate will drop exceptions on the floor. This
commit only serves to change the declaration of the overrides, make sure
they return an empty value, and to propagate OOM errors frm their base
initialize invocations.

2 files changed, 5 insertions, 3 deletions

diff --git a/Userland/Services/WebContent/ConsoleGlobalEnvironmentExtensions.cpp b/Userland/Services/WebContent/ConsoleGlobalEnvironmentExtensions.cpp
index e9c1e63a8f..33a82dbc8c 100644
--- a/Userland/Services/WebContent/ConsoleGlobalEnvironmentExtensions.cpp
+++ b/Userland/Services/WebContent/ConsoleGlobalEnvironmentExtensions.cpp
@@ -21,14 +21,16 @@ ConsoleGlobalEnvironmentExtensions::ConsoleGlobalEnvironmentExtensions(JS::Realm
 {
 }
 
-void ConsoleGlobalEnvironmentExtensions::initialize(JS::Realm& realm)
+JS::ThrowCompletionOr<void> ConsoleGlobalEnvironmentExtensions::initialize(JS::Realm& realm)
 {
-    Base::initialize(realm);
+    MUST_OR_THROW_OOM(Base::initialize(realm));
 
     define_native_accessor(realm, "$0", $0_getter, nullptr, 0);
     define_native_accessor(realm, "$_", $__getter, nullptr, 0);
     define_native_function(realm, "$", $_function, 2, JS::default_attributes);
     define_native_function(realm, "$$", $$_function, 2, JS::default_attributes);
+
+    return {};
 }
 
 void ConsoleGlobalEnvironmentExtensions::visit_edges(Visitor& visitor)
diff --git a/Userland/Services/WebContent/ConsoleGlobalEnvironmentExtensions.h b/Userland/Services/WebContent/ConsoleGlobalEnvironmentExtensions.h
index 476000ad85..fc9d5e74b9 100644
--- a/Userland/Services/WebContent/ConsoleGlobalEnvironmentExtensions.h
+++ b/Userland/Services/WebContent/ConsoleGlobalEnvironmentExtensions.h
@@ -18,7 +18,7 @@ class ConsoleGlobalEnvironmentExtensions final : public JS::Object {
 
 public:
     ConsoleGlobalEnvironmentExtensions(JS::Realm&, Web::HTML::Window&);
-    virtual void initialize(JS::Realm&) override;
+    virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
     virtual ~ConsoleGlobalEnvironmentExtensions() override = default;
 
     void set_most_recent_result(JS::Value result) { m_most_recent_result = move(result); }