Bug 1539944 - Get rid of NS_NewThread r=froydnj

Gets rid of `NS_NewThread`. Where it was used in testing, I gave the new named threads names relevant to their tests.

Differential Revision: https://phabricator.services.mozilla.com/D62475

--HG--
extra : moz-landing-system : lando

image/test/fuzzing/TestDecoders.cpp

@@ -78,7 +78,8 @@ static int RunDecodeToSurfaceFuzzing(nsCOMPtr<nsIInputStream> inputStream,
   }
 
   nsCOMPtr<nsIThread> thread;
-  nsresult rv = NS_NewThread(getter_AddRefs(thread), nullptr);
+  nsresult rv =
+      NS_NewNamedThread("Decoder Test", getter_AddRefs(thread), nullptr);
   MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
 
   // We run the DecodeToSurface tests off-main-thread to ensure that

toolkit/crashreporter/test/gtest/TestCrashThreadAnnotation.cpp

@@ -83,7 +83,8 @@ already_AddRefed<nsIThread> CreateTestThread(const char* aName,
         aMonitor.NotifyAll();
       });
   nsCOMPtr<nsIThread> thread;
-  mozilla::Unused << NS_NewThread(getter_AddRefs(thread), setNameRunnable);
+  mozilla::Unused << NS_NewNamedThread("Test Thread", getter_AddRefs(thread),
+                                       setNameRunnable);
 
   return thread.forget();
 }
@@ -136,7 +137,8 @@ TEST(TestCrashThreadAnnotation, TestGetFlatThreadAnnotation_SetNameTwice)
         monitor.NotifyAll();
       });
   nsCOMPtr<nsIThread> thread;
-  nsresult rv = NS_NewThread(getter_AddRefs(thread), setNameRunnable);
+  nsresult rv =
+      NS_NewNamedThread("Test Thread", getter_AddRefs(thread), setNameRunnable);
   ASSERT_TRUE(NS_SUCCEEDED(rv));
 
   {

xpcom/tests/gtest/TestAtoms.cpp

@@ -165,7 +165,8 @@ TEST(Atoms, ConcurrentAccessing)
   EXPECT_EQ(NS_GetUnusedAtomCount(), int32_t(0));
   nsCOMPtr<nsIThread> threads[kThreadCount];
   for (size_t i = 0; i < kThreadCount; i++) {
-    nsresult rv = NS_NewThread(getter_AddRefs(threads[i]), new nsAtomRunner);
+    nsresult rv = NS_NewNamedThread("Atom Test", getter_AddRefs(threads[i]),
+                                    new nsAtomRunner);
     EXPECT_TRUE(NS_SUCCEEDED(rv));
   }
   for (size_t i = 0; i < kThreadCount; i++) {

xpcom/tests/gtest/TestAutoRefCnt.cpp

@@ -52,8 +52,9 @@ TEST(AutoRefCnt, ThreadSafeAutoRefCntBalance)
   static const size_t kThreadCount = 4;
   nsCOMPtr<nsIThread> threads[kThreadCount];
   for (size_t i = 0; i < kThreadCount; i++) {
-    nsresult rv = NS_NewThread(getter_AddRefs(threads[i]),
+    nsresult rv =
-                               new nsThreadSafeAutoRefCntRunner);
+        NS_NewNamedThread("AutoRefCnt Test", getter_AddRefs(threads[i]),
+                          new nsThreadSafeAutoRefCntRunner);
     EXPECT_TRUE(NS_SUCCEEDED(rv));
   }
   for (size_t i = 0; i < kThreadCount; i++) {

xpcom/threads/nsThreadUtils.cpp

@@ -164,11 +164,6 @@ nsresult NS_NewNamedThread(const nsACString& aName, nsIThread** aResult,
   return NS_OK;
 }
 
-nsresult NS_NewThread(nsIThread** aResult, nsIRunnable* aEvent,
-                      uint32_t aStackSize) {
-  return NS_NewNamedThread(NS_LITERAL_CSTRING(""), aResult, aEvent, aStackSize);
-}
-
 nsresult NS_GetCurrentThread(nsIThread** aResult) {
 #ifdef MOZILLA_INTERNAL_API
   return nsThreadManager::get().nsThreadManager::GetCurrentThread(aResult);

xpcom/threads/nsThreadUtils.h

@@ -38,6 +38,8 @@
 /**
  * Create a new thread, and optionally provide an initial event for the thread.
  *
+ * @param aName
+ *   The name of the thread.
  * @param aResult
  *   The resulting nsIThread object.
  * @param aInitialEvent
@@ -48,13 +50,7 @@
  * @returns NS_ERROR_INVALID_ARG
  *   Indicates that the given name is not unique.
  */
-extern nsresult NS_NewThread(
-    nsIThread** aResult, nsIRunnable* aInitialEvent = nullptr,
-    uint32_t aStackSize = nsIThreadManager::DEFAULT_STACK_SIZE);
 
-/**
- * Creates a named thread, otherwise the same as NS_NewThread
- */
 extern nsresult NS_NewNamedThread(
     const nsACString& aName, nsIThread** aResult,
     nsIRunnable* aInitialEvent = nullptr,