Compute GpuDriverBugWorkarounds only one time in the GPU process

gpu/command_buffer/tests/gl_copy_tex_image_2d_workaround_unittest.cc

 // Copyright 2016 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.
 
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES
 #endif
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
@@ skipping 15 matching lines @@
 class GLCopyTexImage2DWorkaroundTest : public testing::TestWithParam<GLenum> {
  public:
   GLCopyTexImage2DWorkaroundTest() {}
 
  protected:
   void SetUp() override {
       base::CommandLine command_line(0, NULL);
       command_line.AppendSwitchASCII(
           switches::kGpuDriverBugWorkarounds,
           base::IntToString(gpu::USE_INTERMEDIARY_FOR_COPY_TEXTURE_IMAGE));
-      gl_.InitializeWithCommandLine(GLManager::Options(), &command_line);
+      gl_.InitializeWithCommandLine(GLManager::Options(), command_line);
       gl_.set_use_iosurface_memory_buffers(true);
       DCHECK(gl_.workarounds().use_intermediary_for_copy_texture_image);
   }
 
   void TearDown() override {
     GLTestHelper::CheckGLError("no errors", __LINE__);
     gl_.Destroy();
   }
 
   GLManager gl_;
@@ skipping 66 matching lines @@
     // Verify.
     const uint8_t* expected = expectations[i];
     EXPECT_TRUE(
         GLTestHelper::CheckPixels(0, 0, 1, 1, 1 /* tolerance */, expected));
   }
 }
 
 #endif  // defined(OS_MACOSX)
 
 }  // namespace gpu