--- firefox-60.5.0/js/src/gc/Memory.cpp	2019-01-24 18:30:47.000000000 +0000
+++ firefox-60.5.0/js/src/gc/Memory.cpp	2019-01-28 20:38:56.433819315 +0000
@@ -18,11 +18,6 @@
 #include "util/Windows.h"
 #include <psapi.h>
 
-#elif defined(SOLARIS)
-
-#include <sys/mman.h>
-#include <unistd.h>
-
 #elif defined(XP_UNIX)
 
 #include <algorithm>
@@ -345,67 +340,6 @@ void DeallocateMappedContent(void* p, si
 
 #endif
 
-#elif defined(SOLARIS)
-
-#ifndef MAP_NOSYNC
-#define MAP_NOSYNC 0
-#endif
-
-void InitMemorySubsystem() {
-  if (pageSize == 0)
-    pageSize = allocGranularity = size_t(sysconf(_SC_PAGESIZE));
-}
-
-void* MapAlignedPages(size_t size, size_t alignment) {
-  MOZ_ASSERT(size >= alignment);
-  MOZ_ASSERT(size >= allocGranularity);
-  MOZ_ASSERT(size % alignment == 0);
-  MOZ_ASSERT(size % pageSize == 0);
-  MOZ_ASSERT_IF(alignment < allocGranularity,
-                allocGranularity % alignment == 0);
-  MOZ_ASSERT_IF(alignment > allocGranularity,
-                alignment % allocGranularity == 0);
-
-  int prot = PROT_READ | PROT_WRITE;
-  int flags = MAP_PRIVATE | MAP_ANON | MAP_ALIGN | MAP_NOSYNC;
-
-  void* p = mmap((caddr_t)alignment, size, prot, flags, -1, 0);
-  if (p == MAP_FAILED) return nullptr;
-  return p;
-}
-
-static void* MapAlignedPagesLastDitch(size_t size, size_t alignment) {
-  return nullptr;
-}
-
-void UnmapPages(void* p, size_t size) {
-  MOZ_ALWAYS_TRUE(0 == munmap((caddr_t)p, size));
-}
-
-bool MarkPagesUnused(void* p, size_t size) {
-  MOZ_ASSERT(OffsetFromAligned(p, pageSize) == 0);
-  return true;
-}
-
-bool MarkPagesInUse(void* p, size_t size) {
-  if (!DecommitEnabled()) return;
-
-  MOZ_ASSERT(OffsetFromAligned(p, pageSize) == 0);
-}
-
-size_t GetPageFaultCount() { return 0; }
-
-void* AllocateMappedContent(int fd, size_t offset, size_t length,
-                            size_t alignment) {
-  // Not implemented.
-  return nullptr;
-}
-
-// Deallocate mapped memory for object.
-void DeallocateMappedContent(void* p, size_t length) {
-  // Not implemented.
-}
-
 #elif defined(XP_UNIX)
 
 void InitMemorySubsystem() {