gpu: introduce DISABLE_TEXTURE_STORAGE workaround for mesa

gpu/command_buffer/tests/gl_texture_storage_unittest.cc

 // 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.
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 
+#include "base/command_line.h"
+#include "base/strings/string_number_conversions.h"
 #include "gpu/command_buffer/tests/gl_manager.h"
 #include "gpu/command_buffer/tests/gl_test_utils.h"
+#include "gpu/config/gpu_switches.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gpu {
 
 class TextureStorageTest : public testing::Test {
  protected:
   static const GLsizei kResolution = 64;
   void SetUp() override {
+    base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
+    command_line.AppendSwitchASCII(
+        switches::kGpuDriverBugWorkarounds,
+        base::IntToString(gpu::DISABLE_TEXTURE_STORAGE));
+
     GLManager::Options options;
     options.size = gfx::Size(kResolution, kResolution);
-    gl_.Initialize(options);
+
+    gl_.InitializeWithCommandLine(options, &command_line);
+    DCHECK(gl_.workarounds().disable_texture_storage);
     gl_.MakeCurrent();
 
     glGenTextures(1, &tex_);
     glBindTexture(GL_TEXTURE_2D, tex_);
 
     glGenFramebuffers(1, &fbo_);
     glBindFramebuffer(GL_FRAMEBUFFER, fbo_);
     glFramebufferTexture2D(GL_FRAMEBUFFER,
                            GL_COLOR_ATTACHMENT0,
                            GL_TEXTURE_2D,
@@ skipping 21 matching lines @@
 
   uint8 source_pixels[16] = {
       1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4
   };
   glTexSubImage2D(GL_TEXTURE_2D,
                   0,
                   0, 0,
                   2, 2,
                   GL_RGBA, GL_UNSIGNED_BYTE,
                   source_pixels);
+
+  // Mesa dirvers crash without DISABLE_TEXTURE_STORAGE workaround.
+  // crbug.com/521904
   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 2, 2, 0, source_pixels));
 }
 
 TEST_F(TextureStorageTest, IsImmutable) {
   if (!extension_available_)
     return;
 
   glTexStorage2DEXT(GL_TEXTURE_2D, 1, GL_RGBA8_OES, 4, 4);
 
   GLint param = 0;
@@ skipping 76 matching lines @@
                GL_RGBA,
                GL_UNSIGNED_BYTE,
                NULL);
   EXPECT_EQ(static_cast<GLenum>(GL_INVALID_OPERATION), glGetError());
 }
 
 }  // namespace gpu