gles2_conform: Suppress warnings on Win/GN.

gpu/gles2_conform_support/BUILD.gn

 # Copyright 2015 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.
 
 declare_args() {
   # Set to true to compile with the OpenGL ES 2.0 conformance tests.
   internal_gles2_conform_tests = false
 }
 
 config("gles2_conform_test_warnings") {
@@ skipping 129 matching lines @@
       deps += [
         "//third_party/angle:libEGL",
         "//third_party/angle:libGLESv2",
       ]
       defines += [
         "EGLAPI=",
         "EGLAPIENTRY=",
       ]
       configs -= [ "//build/config/win:nominmax" ]
       cflags = [
+        "/wd4013",  # undefined function, assuming extern returning int
         "/wd4018",  # signed/unsigned mismatch
+        "/wd4054",  # type cast from function pointer to data pointer
+        "/wd4057",  # non-constant aggregate initializer
         "/wd4101",  # unreferenced local variable
+        "/wd4189",  # local variable is initialized but not referenced
+        "/wd4204",  # non-constant aggregate initializer
+        "/wd4245",  # conversion between int/uint
+        "/wd4389",  # signed/unsigned comparison
+        "/wd4701",  # potentially uninitialized variable used
+        "/wd4703",  # potentially uninitialized pointer variable used
+        "/wd4706",  # assignment within conditional expression
         "/wd4715",  # not all control paths return a value
+        "/wd4716",  # function must return a value
         "/wd4267",  # size_t/unsigned int conversion
       ]
     }
     if (is_mac) {
       defines += [
         "_STDINT",
         "_STDINT_H",
       ]
     }
 
@@ skipping 31 matching lines @@
       ":gles2_conform_test_windowless",
     ]
     deps += [ ":generate_gles2_conform_tests" ]
     sources += [ "$target_gen_dir/gles2_conform_test_autogen.cc" ]
     data += [ "//third_party/gles2_conform/GTF_ES/" ]
 
     # TODO: Make these tests pull in the correct data dependencies once they
     # are exported in GN. Maybe from  //third_party/gles2_conform/GTF_ES/
   }
 }