Moved zones and zone related stuff in its own directory.

BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
@@ skipping 1678 matching lines @@
     "src/wasm/wasm-interpreter.h",
     "src/wasm/wasm-js.cc",
     "src/wasm/wasm-js.h",
     "src/wasm/wasm-macro-gen.h",
     "src/wasm/wasm-module.cc",
     "src/wasm/wasm-module.h",
     "src/wasm/wasm-opcodes.cc",
     "src/wasm/wasm-opcodes.h",
     "src/wasm/wasm-result.cc",
     "src/wasm/wasm-result.h",
-    "src/zone-allocator.h",
-    "src/zone-containers.h",
-    "src/zone.cc",
-    "src/zone.h",
+    "src/zone/accounting-allocator.cc",
+    "src/zone/accounting-allocator.h",
+    "src/zone/zone-allocator.h",
+    "src/zone/zone-allocator.h",
+    "src/zone/zone-containers.h",
+    "src/zone/zone-segment.h",
+    "src/zone/zone-segment.h",
+    "src/zone/zone.cc",
+    "src/zone/zone.h",
   ]
 
   if (v8_current_cpu == "x86") {
     sources += [
       "src/builtins/ia32/builtins-ia32.cc",
       "src/compiler/ia32/code-generator-ia32.cc",
       "src/compiler/ia32/instruction-codes-ia32.h",
       "src/compiler/ia32/instruction-scheduler-ia32.cc",
       "src/compiler/ia32/instruction-selector-ia32.cc",
       "src/crankshaft/ia32/lithium-codegen-ia32.cc",
@@ skipping 337 matching lines @@
 
   if (v8_enable_inspector_override) {
     deps += [ "src/inspector:inspector" ]
   }
 }
 
 v8_source_set("v8_libbase") {
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
   sources = [
-    "src/base/accounting-allocator.cc",
-    "src/base/accounting-allocator.h",
     "src/base/adapters.h",
     "src/base/atomic-utils.h",
     "src/base/atomicops.h",
     "src/base/atomicops_internals_arm64_gcc.h",
     "src/base/atomicops_internals_arm_gcc.h",
     "src/base/atomicops_internals_atomicword_compat.h",
     "src/base/atomicops_internals_mac.h",
     "src/base/atomicops_internals_mips64_gcc.h",
     "src/base/atomicops_internals_mips_gcc.h",
     "src/base/atomicops_internals_s390_gcc.h",
@@ skipping 698 matching lines @@
     ":fuzzer_support",
     ":lib_wasm_section_fuzzer",
     ":wasm_module_runner",
   ]
 
   configs = [ ":internal_config" ]
 }
 
 v8_fuzzer("wasm_data_section_fuzzer") {
 }