Move platform abstraction to base library

src/base/utils/random-number-generator.h

Index: src/base/utils/random-number-generator.h
diff --git a/src/utils/random-number-generator.h b/src/base/utils/random-number-generator.h
similarity index 94%
rename from src/utils/random-number-generator.h
rename to src/base/utils/random-number-generator.h
index 6b077eebdd77539abe233eebca9688df45a64446..5955d6659761b4a7b5bf46ad1113a1a4ed22f7fb 100644
--- a/src/utils/random-number-generator.h
+++ b/src/base/utils/random-number-generator.h
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_UTILS_RANDOM_NUMBER_GENERATOR_H_
-#define V8_UTILS_RANDOM_NUMBER_GENERATOR_H_
+#ifndef V8_BASE_UTILS_RANDOM_NUMBER_GENERATOR_H_
+#define V8_BASE_UTILS_RANDOM_NUMBER_GENERATOR_H_
 
 #include "src/base/macros.h"
 
 namespace v8 {
-namespace internal {
+namespace base {
 
 // -----------------------------------------------------------------------------
 // RandomNumberGenerator
@@ -84,6 +84,6 @@ class RandomNumberGenerator V8_FINAL {
   int64_t seed_;
 };
 
-} }  // namespace v8::internal
+} }  // namespace v8::base
 
-#endif  // V8_UTILS_RANDOM_NUMBER_GENERATOR_H_
+#endif  // V8_BASE_UTILS_RANDOM_NUMBER_GENERATOR_H_