Compute GpuDriverBugWorkarounds only one time in the GPU process

gpu/command_buffer/service/buffer_manager_unittest.cc

Index: gpu/command_buffer/service/buffer_manager_unittest.cc
diff --git a/gpu/command_buffer/service/buffer_manager_unittest.cc b/gpu/command_buffer/service/buffer_manager_unittest.cc
index 45e08c80fccc02ebe40feec40a996ed293248454..3002759284f0b72c0143f5f09a7c0793fd50c5c1 100644
--- a/gpu/command_buffer/service/buffer_manager_unittest.cc
+++ b/gpu/command_buffer/service/buffer_manager_unittest.cc
@@ -248,9 +248,9 @@ class BufferManagerMemoryTrackerTest : public BufferManagerTestBase {
 class BufferManagerClientSideArraysTest : public BufferManagerTestBase {
  protected:
   void SetUp() override {
-    feature_info_ = new FeatureInfo();
-    feature_info_->workarounds_.use_client_side_arrays_for_stream_buffers =
-      true;
+    GpuDriverBugWorkarounds gpu_driver_bug_workarounds;
+    gpu_driver_bug_workarounds.use_client_side_arrays_for_stream_buffers = true;
+    feature_info_ = new FeatureInfo(gpu_driver_bug_workarounds);
     SetUpBase(NULL, feature_info_.get(), "");
   }