Fixed up some #includes in mutex.h

PiperOrigin-RevId: 807378888
Change-Id: Ic4e11444b4839228c365c68321848c954bf67e63
diff --git a/absl/synchronization/mutex.h b/absl/synchronization/mutex.h
index dce8b8f..2062486 100644
--- a/absl/synchronization/mutex.h
+++ b/absl/synchronization/mutex.h
@@ -61,17 +61,15 @@
 #include <atomic>
 #include <cstdint>
 #include <cstring>
-#include <iterator>
-#include <string>
 
 #include "absl/base/attributes.h"
+#include "absl/base/config.h"
 #include "absl/base/const_init.h"
 #include "absl/base/internal/identity.h"
-#include "absl/base/internal/low_level_alloc.h"
 #include "absl/base/internal/thread_identity.h"
 #include "absl/base/internal/tsan_mutex_interface.h"
+#include "absl/base/macros.h"
 #include "absl/base/nullability.h"
-#include "absl/base/port.h"
 #include "absl/base/thread_annotations.h"
 #include "absl/synchronization/internal/kernel_timeout.h"
 #include "absl/synchronization/internal/per_thread_sem.h"
@@ -561,10 +559,10 @@
       base_internal::PerThreadSynch* absl_nonnull w);
   void Dtor();
 
-  friend class CondVar;   // for access to Trans()/Fer().
+  friend class CondVar;                // for access to Trans()/Fer().
   void Trans(MuHow absl_nonnull how);  // used for CondVar->Mutex transfer
   void Fer(base_internal::PerThreadSynch* absl_nonnull
-           w);  // used for CondVar->Mutex transfer
+               w);  // used for CondVar->Mutex transfer
 
   // Catch the error of writing Mutex when intending MutexLock.
   explicit Mutex(const volatile Mutex* absl_nullable /*ignored*/) {}
@@ -797,7 +795,7 @@
   Condition(
       bool (*absl_nonnull func)(T* absl_nullability_unknown),
       typename absl::internal::type_identity<T>::type* absl_nullability_unknown
-      arg);
+          arg);
 
   // Templated version for invoking a method that returns a `bool`.
   //
@@ -1186,7 +1184,7 @@
 inline Condition::Condition(
     bool (*absl_nonnull func)(T* absl_nullability_unknown),
     typename absl::internal::type_identity<T>::type* absl_nullability_unknown
-    arg)
+        arg)
     // Just delegate to the overload above.
     : Condition(func, arg) {}