[Windows CFG Test] Added unittest for CFG enabling on process.

sandbox/win/BUILD.gn

Index: sandbox/win/BUILD.gn
diff --git a/sandbox/win/BUILD.gn b/sandbox/win/BUILD.gn
index ac679f4d439b888763e5b80f0ec1edb3bd44afd1..958996b8ad3081020efee2c3052c23c864c2f1a9 100644
--- a/sandbox/win/BUILD.gn
+++ b/sandbox/win/BUILD.gn
@@ -191,6 +191,7 @@ test("sbox_integration_tests") {
     "tests/common/controller.h",
     "tests/common/test_utils.cc",
     "tests/common/test_utils.h",
+    "tests/integration_tests/cfi_unittest.cc",
     "tests/integration_tests/integration_tests.cc",
     "tests/integration_tests/integration_tests_common.h",
     "tests/integration_tests/integration_tests_test.cc",
@@ -198,15 +199,33 @@ test("sbox_integration_tests") {
 
   deps = [
     ":sandbox",
-    ":sbox_integration_test_hook_dll",
-    ":sbox_integration_test_win_proc",
     "//base/test:test_support",
     "//testing/gtest",
   ]
 
+  data_deps = [
+    ":cfi_unittest_exe",
+    ":sbox_integration_test_hook_dll",
+    ":sbox_integration_test_win_proc",
+  ]
+
   libs = [ "dxva2.lib" ]
 }
 
+executable("cfi_unittest_exe") {
+  sources = [
+    "tests/integration_tests/cfi_unittest_exe.cc",
+  ]
+  deps = [
+    "//base",
+    "//build/config/sanitizers:deps",
+    "//build/win:default_exe_manifest",
+  ]
+
+  # cfi_unittest.cc tests require this exe is built with CFG enabled.
+  configs += [ "//build/config/win:win_msvc_cfg" ]
+}
+
 loadable_module("sbox_integration_test_hook_dll") {
   sources = [
     "tests/integration_tests/hooking_dll.cc",