Compute GpuDriverBugWorkarounds only one time in the GPU process

gpu/command_buffer/tests/gl_iosurface_readback_workaround_unittest.cc

Index: gpu/command_buffer/tests/gl_iosurface_readback_workaround_unittest.cc
diff --git a/gpu/command_buffer/tests/gl_iosurface_readback_workaround_unittest.cc b/gpu/command_buffer/tests/gl_iosurface_readback_workaround_unittest.cc
index e8e7bc525c3f9fbd9df043fbe08c79a328fe5887..d4ddb95fc181309717eb35ea25b639806ca8e65b 100644
--- a/gpu/command_buffer/tests/gl_iosurface_readback_workaround_unittest.cc
+++ b/gpu/command_buffer/tests/gl_iosurface_readback_workaround_unittest.cc
@@ -33,7 +33,7 @@ class GLIOSurfaceReadbackWorkaroundTest : public testing::Test {
       command_line.AppendSwitchASCII(
           switches::kGpuDriverBugWorkarounds,
           base::IntToString(gpu::IOSURFACE_READBACK_WORKAROUND));
-      gl_.InitializeWithCommandLine(GLManager::Options(), &command_line);
+      gl_.InitializeWithCommandLine(GLManager::Options(), command_line);
       gl_.set_use_iosurface_memory_buffers(true);
       DCHECK(gl_.workarounds().iosurface_readback_workaround);
   }