Sync our homegrown SysInfo replacement with the one in Chrome base.

test/base-unittests/platform/platform-unittest.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/base/platform/platform.h"
 
 #if V8_OS_POSIX
 #include <unistd.h>  // NOLINT
 #endif
 
@@ skipping 10 matching lines @@
   EXPECT_EQ(static_cast<int>(getpid()), OS::GetCurrentProcessId());
 #endif
 
 #if V8_OS_WIN
   EXPECT_EQ(static_cast<int>(::GetCurrentProcessId()),
             OS::GetCurrentProcessId());
 #endif
 }
 
 
-TEST(OS, NumberOfProcessorsOnline) {
-  EXPECT_GT(OS::NumberOfProcessorsOnline(), 0);
-}
-
-
 namespace {
 
 class SelfJoinThread V8_FINAL : public Thread {
  public:
   SelfJoinThread() : Thread(Options("SelfJoinThread")) {}
   virtual void Run() V8_OVERRIDE { Join(); }
 };
 
 }
 
@@ skipping 60 matching lines @@
 
 
 TEST_F(ThreadLocalStorageTest, DoTest) {
   Run();
   Start();
   Join();
 }
 
 }  // namespace base
 }  // namespace v8