Workaround for Intel 6xxx clear to 0/1 bug

ui/gl/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/buildflag_header.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
 import("//ui/ozone/ozone.gni")
 import("//testing/test.gni")
@@ skipping 104 matching lines @@
     "gl_surface_overlay.cc",
     "gl_surface_overlay.h",
     "gl_surface_stub.cc",
     "gl_surface_stub.h",
     "gl_switches.cc",
     "gl_switches.h",
     "gl_utils.cc",
     "gl_utils.h",
     "gl_version_info.cc",
     "gl_version_info.h",
+    "gl_workarounds.h",
     "gpu_switching_manager.cc",
     "gpu_switching_manager.h",
     "gpu_timing.cc",
     "gpu_timing.h",
     "scoped_binders.cc",
     "scoped_binders.h",
     "scoped_make_current.cc",
     "scoped_make_current.h",
     "sync_control_vsync_provider.cc",
     "sync_control_vsync_provider.h",
@@ skipping 315 matching lines @@
     sources = [
       "../android/java/src/org/chromium/ui/gl/SurfaceTextureListener.java",
       "../android/java/src/org/chromium/ui/gl/SurfaceTexturePlatformWrapper.java",
     ]
     public_deps = [
       ":surface_jni_headers",
     ]
     jni_package = "ui/gl"
   }
 }