Remove MaxSharedMemorySize() function from SysInfo

base/sys_info_linux.cc

Index: base/sys_info_linux.cc
diff --git a/base/sys_info_linux.cc b/base/sys_info_linux.cc
index 300ef2c0c8b67900b2b653aca40f9de878a2db82..298d245ecf580da4d8790f5dc47f851c0208ab5d 100644
--- a/base/sys_info_linux.cc
+++ b/base/sys_info_linux.cc
@@ -33,28 +33,9 @@ int64_t AmountOfPhysicalMemory() {
   return AmountOfMemory(_SC_PHYS_PAGES);
 }
 
-uint64_t MaxSharedMemorySize() {
-  std::string contents;
-  base::ReadFileToString(base::FilePath("/proc/sys/kernel/shmmax"), &contents);
-  DCHECK(!contents.empty());
-  if (!contents.empty() && contents.back() == '\n') {
-    contents.erase(contents.length() - 1);
-  }
-
-  uint64_t limit;
-  if (!base::StringToUint64(contents, &limit)) {
-    limit = 0;
-  }
-  DCHECK_GT(limit, 0u);
-  return limit;
-}
-
 base::LazyInstance<
     base::internal::LazySysInfoValue<int64_t, AmountOfPhysicalMemory>>::Leaky
     g_lazy_physical_memory = LAZY_INSTANCE_INITIALIZER;
-base::LazyInstance<
-    base::internal::LazySysInfoValue<uint64_t, MaxSharedMemorySize>>::Leaky
-    g_lazy_max_shared_memory = LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
@@ -71,11 +52,6 @@ int64_t SysInfo::AmountOfPhysicalMemory() {
 }
 
 // static
-uint64_t SysInfo::MaxSharedMemorySize() {
-  return g_lazy_max_shared_memory.Get().value();
-}
-
-// static
 std::string SysInfo::CPUModelName() {
 #if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL)
   const char kCpuModelPrefix[] = "Hardware";