Add a new driver bug workaround SANDBOX_START_EARLY

ui/gl/gl_implementation.cc

 // 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.
 
 #include "ui/gl/gl_implementation.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/macros.h"
+#include "base/stl_util.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "build/build_config.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_gl_api_implementation.h"
 #include "ui/gl/gl_version_info.h"
 
 namespace gl {
 
 namespace {
@@ skipping 63 matching lines @@
 }
 
 void SetGLImplementation(GLImplementation implementation) {
   g_gl_implementation = implementation;
 }
 
 GLImplementation GetGLImplementation() {
   return g_gl_implementation;
 }
 
+bool SelectGLImplementation(const std::vector<GLImplementation>& allowed_impls,
+                            GLImplementation* out_impl,
+                            bool* out_fallback_to_osmesa) {
+  DCHECK(out_impl);
+  DCHECK(out_fallback_to_osmesa);
+  DCHECK(!allowed_impls.empty());
+
+  base::CommandLine* cmd = base::CommandLine::ForCurrentProcess();
+
+  // The default implementation is always the first one in list.
+  GLImplementation impl = allowed_impls[0];
+  bool fallback_to_osmesa = false;
+  if (cmd->HasSwitch(switches::kOverrideUseGLWithOSMesaForTests)) {
+    impl = kGLImplementationOSMesaGL;
+  } else if (cmd->HasSwitch(switches::kUseGL)) {
+    std::string requested_implementation_name =
+        cmd->GetSwitchValueASCII(switches::kUseGL);
+    if (requested_implementation_name == "any") {
+      fallback_to_osmesa = true;
+    } else if (requested_implementation_name ==
+                   kGLImplementationSwiftShaderName ||
+               requested_implementation_name == kGLImplementationANGLEName) {
+      impl = kGLImplementationEGLGLES2;
+    } else {
+      impl = GetNamedGLImplementation(requested_implementation_name);
+      if (!base::ContainsValue(allowed_impls, impl)) {
+        LOG(ERROR) << "Requested GL implementation is not available.";
+        return false;
+      }
+    }
+  }
+
+  *out_impl = impl;
+  *out_fallback_to_osmesa = fallback_to_osmesa;
+
+  return true;
+}
+
 bool HasDesktopGLFeatures() {
   return kGLImplementationDesktopGL == g_gl_implementation ||
          kGLImplementationDesktopGLCoreProfile == g_gl_implementation ||
          kGLImplementationOSMesaGL == g_gl_implementation ||
          kGLImplementationAppleGL == g_gl_implementation;
 }
 
 void AddGLNativeLibrary(base::NativeLibrary library) {
   DCHECK(library);
 
@@ skipping 112 matching lines @@
   base::NativeLibrary library = base::LoadNativeLibrary(filename, &error);
   if (!library) {
     LOG(ERROR) << "Failed to load " << filename.MaybeAsASCII() << ": "
                << error.ToString();
     return NULL;
   }
   return library;
 }
 
 }  // namespace gl