Enable /Zc:StrictStrings on release builds

build/common.gypi

 # Copyright (c) 2012 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 2864 matching lines @@
       ['OS=="win"', {
         'defines': [
           '__STD_C',
           '_CRT_SECURE_NO_DEPRECATE',
           '_SCL_SECURE_NO_DEPRECATE',
           # This define is required to pull in the new Win8 interfaces from
           # system headers like ShObjIdl.h.
           'NTDDI_VERSION=0x06030000',
           # This is required for ATL to use XP-safe versions of its functions.
           '_USING_V110_SDK71_',
+          # This is required to avoid including mshtml.h, which is wasteful
+          # and not StrictStrings compliant.
+          '_ATL_NO_HOSTING'
         ],
         'include_dirs': [
           '<(DEPTH)/third_party/wtl/include',
         ],
         'conditions': [
           ['win_z7!=0', {
             'msvs_settings': {
               # Generates debug info when win_z7=1
               # even if fastbuild=1 (that makes GenerateDebugInformation false).
               'VCLinkerTool': {
@@ skipping 629 matching lines @@
                 # to put bit-identical constants at the same address even if
                 # they're unrelated constants, which saves binary size.
                 # This optimization can't be used when ASan is enabled because
                 # it is not compatible with the ASan ODR checker.
                 'AdditionalOptions': ['/Gw'],
               }],
             ],
             'AdditionalOptions': [
                 '/d2Zi+',  # Improve debugging of Release builds.
                 '/Zc:inline',  # Remove unreferenced COMDAT (faster links).
+                # Prohibit assigning string constants to non-const char*
+                '/Zc:strictStrings',
                 '<@(win_release_extra_cflags)',
             ],
           },
           'VCLinkerTool': {
             # LinkIncremental is a tri-state boolean, where 0 means default
             # (i.e., inherit from parent solution), 1 means false, and
             # 2 means true.
             'LinkIncremental': '1',
             # This corresponds to the /PROFILE flag which ensures the PDB
             # file contains FIXUP information (growing the PDB file by about
@@ skipping 2753 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }