[Windows MSVC CFG] Turning on linker CFG for all. Removing CFG compile.

sandbox/win/tests/integration_tests/cfi_unittest_exe.cc

 // Copyright 2017 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.
 #include <windows.h>
 
 #include "base/files/file_path.h"
 #include "base/scoped_native_library.h"
 
 namespace {
 
@@ skipping 202 matching lines @@
 //    CFG exception will be thrown.
 //
 //  - The DoPatch() function then overwrites with a small, custom change.  This
 //    change will simply add 16 (0x10) to the real function address in EAX/RAX
 //    about to be checked.  This will maintain the 16-byte alignment required in
 //    a target address by CFG, but also ensure that it fails the check.
 //
 //    The whole purpose of this unittest is to ensure that a failed CFG check in
 //    a Microsoft binary results in an exception.  If CFG is not properly
 //    enabled for a process, no exception will be thrown.
-//    This test EXE is built with
-//    configs += [ "//build/config/win:win_msvc_cfg" ]
-//    which should result in CFG enabled on the process.
+//    All Chromium projects should be linked with "common_linker_setup" config
+//    (build\config\win\BUILD.gn), which should result in CFG enabled on the
+//    process.
 //
 //  - The patches (x86 or x64) were carefully constructed to be valid and not
 //    mess up the executing instructions.  Need to ensure that the CFG check
 //    fully happens, and that nothing else goes wrong before OR AFTER that
 //    point.  The only exception expected is a very intentional one.
 //    **The patches also allow the call to GetSystemMetrics to SUCCEED if CFG is
 //    NOT enabled for the process!  This makes for very clear behaviour.
 void TestMsIndirect() {
   base::ScopedNativeLibrary user32(base::FilePath(L"user32.dll"));
   if (!user32.is_valid())
@@ skipping 50 matching lines @@
     case 1:
       TestMsIndirect();
       break;
     // Unsupported argument.
     default:
       _exit(-1);
   }
 
   return 0;
 }