Bug 1753424 - Remove unused UtilityProcessParent and UtilityProcessManager code r=nika

Differential Revision: https://phabricator.services.mozilla.com/D139816

ipc/glue/UtilityProcessManager.cpp

@@ -201,22 +201,6 @@ void UtilityProcessManager::OnProcessUnexpectedShutdown(
   DestroyProcess();
 }
 
-void UtilityProcessManager::NotifyRemoteActorDestroyed() {
-  if (!NS_IsMainThread()) {
-    RefPtr<UtilityProcessManager> self = this;
-    NS_DispatchToMainThread(NS_NewRunnableFunction(
-        "UtilityProcessManager::NotifyRemoteActorDestroyed()",
-        [self]() { self->NotifyRemoteActorDestroyed(); }));
-    return;
-  }
-
-  // One of the bridged top-level actors for the Utility process has been
-  // prematurely terminated, and we're receiving a notification. This
-  // can happen if the ActorDestroy for a bridged protocol fires
-  // before the ActorDestroy for PUtilityProcessParent.
-  OnProcessUnexpectedShutdown(mProcess);
-}
-
 void UtilityProcessManager::CleanShutdown() { DestroyProcess(); }
 
 void UtilityProcessManager::DestroyProcess() {

ipc/glue/UtilityProcessManager.h

@@ -36,10 +36,6 @@ class UtilityProcessManager final : public UtilityProcessHost::Listener {
 
   void OnProcessUnexpectedShutdown(UtilityProcessHost* aHost);
 
-  // Notify the UtilityProcessManager that a top-level PUtility protocol has
-  // been terminated. This may be called from any thread.
-  void NotifyRemoteActorDestroyed();
-
   // Returns the platform pid for the Utility process.
   Maybe<base::ProcessId> ProcessPid();
 
@@ -50,9 +46,6 @@ class UtilityProcessManager final : public UtilityProcessHost::Listener {
   // Returns access to the PUtility protocol if a Utility process is present.
   UtilityProcessParent* GetProcessParent() { return mProcessParent; }
 
-  // Returns whether or not a Utility process was ever launched.
-  bool AttemptedProcess() const { return mNumProcessAttempts > 0; }
-
   // Returns the Utility Process
   UtilityProcessHost* Process() { return mProcess; }
 

ipc/glue/UtilityProcessParent.cpp

@@ -21,23 +21,14 @@
 
 namespace mozilla::ipc {
 
-static std::atomic<UtilityProcessParent*> sUtilityProcessParent;
-
 UtilityProcessParent::UtilityProcessParent(UtilityProcessHost* aHost)
     : mHost(aHost) {
   MOZ_ASSERT(NS_IsMainThread());
   MOZ_ASSERT(mHost);
-  sUtilityProcessParent = this;
 }
 
 UtilityProcessParent::~UtilityProcessParent() = default;
 
-/* static */
-UtilityProcessParent* UtilityProcessParent::GetSingleton() {
-  MOZ_DIAGNOSTIC_ASSERT(sUtilityProcessParent);
-  return sUtilityProcessParent;
-}
-
 bool UtilityProcessParent::SendRequestMemoryReport(
     const uint32_t& aGeneration, const bool& aAnonymize,
     const bool& aMinimizeMemoryUsage, const Maybe<FileDescriptor>& aDMDFile) {

ipc/glue/UtilityProcessParent.h

@@ -29,8 +29,6 @@ class UtilityProcessParent final
 
   explicit UtilityProcessParent(UtilityProcessHost* aHost);
 
-  static UtilityProcessParent* GetSingleton();
-
   mozilla::ipc::IPCResult RecvAddMemoryReport(const MemoryReport& aReport);
 
   bool SendRequestMemoryReport(const uint32_t& aGeneration,

ipc/glue/UtilityProcessSandboxing.h

@@ -16,7 +16,9 @@ namespace ipc {
 // to be updated as well.
 enum SandboxingKind : uint64_t {
 
-  GENERIC_UTILITY = 0x01,
+  GENERIC_UTILITY,
+
+  COUNT,
 
 };