Finish replicating the *.vsprops structure.

build/debug.scons

+# Copyright (c) 2006-2008 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.
+
+__doc__ = """
+Debug settings for Chromium builds.
+
+Incorporates "essential" and "chromium_build" settings.
+"""
+
+Import("env")
+
+env.ApplySConscript([
+    'internal/essential.scons',
+    'internal/chromium_build${CHROMIUM_BUILD}.scons',
+])
+
+env.Append(
+    CPPDEFINES = [
+        '_DEBUG',
+    ],
+)
+
+if env['PLATFORM'] == 'win32':
+  env.Append(
+      CCFLAGS = [
+          '/Od',              # VCCLCompilerTool.Optimization="0"
+          '/RTC1',            # VCCLCompilerTool.BasicRuntimeChecks="3"
+          '/MTd',             # VCCLCompilerTool.RuntimeLibrary="1"
+      ],
+      LINKFLAGS = [
+          '/INCREMENTAL',     # VCLinkerTool.LinkIncremental="2"
+          '/DEBUG',
+      ],
+  )