Enable /analyze in gn builds

build/config/BUILDCONFIG.gn

 # Copyright (c) 2013 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.
 
 # =============================================================================
 # PLATFORM SELECTION
 # =============================================================================
 #
 # There are two main things to set: "os" and "cpu". The "toolchain" is the name
 # of the GN thing that encodes combinations of these things.
@@ skipping 448 matching lines @@
   "//build/config/compiler:runtime_library",
   "//build/config/sanitizers:default_sanitizer_flags",
   "//build/config/sanitizers:default_sanitizer_coverage_flags",
 ]
 if (is_win) {
   _native_compiler_configs += [
     "//build/config/win:lean_and_mean",
     "//build/config/win:nominmax",
     "//build/config/win:unicode",
     "//build/config/win:winver",
+    "//build/config/win:win_analyze",

[brettw, 2016/02/03 18:48:00]

The only time we need to add stuff in this file is when some targets need to
opt-out of the config. Otherwise it should go in one of the standard ones.

[brucedawson, 2016/02/06 01:07:30]

Some targets do indeed need to opt-out of this config - typically due to
compiler bugs. Currently ffmpeg needs to opt-out.

   ]
 }
 if (current_os == "winrt_81" || current_os == "winrt_81_phone" ||
     current_os == "winrt_10") {
   _native_compiler_configs += [ "//build/config/win:target_winrt" ]
 }
 if (is_posix) {
   _native_compiler_configs += [
     "//build/config/gcc:no_exceptions",
     "//build/config/gcc:symbol_visibility_hidden",
@@ skipping 123 matching lines @@
     forward_variables_from(invoker, "*")
 
     # All shared libraries must have the sanitizer deps to properly link in
     # asan mode (this target will be empty in other cases).
     if (!defined(deps)) {
       deps = []
     }
     deps += [ "//build/config/sanitizers:deps" ]
   }
 }