Compute GpuDriverBugWorkarounds only one time in the GPU process

gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
index cbe3112b391c27784afa0907da0db34d7d83b70c..fcc8b26ed1244562ea9b317c25b3dde337bc70ec 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
@@ -189,14 +189,18 @@ void GLES2DecoderTestBase::InitDecoderWithCommandLine(
   SetupMockGLBehaviors();
 
   scoped_refptr<FeatureInfo> feature_info;
-  if (command_line)
-    feature_info = new FeatureInfo(*command_line);
-  group_ = scoped_refptr<ContextGroup>(
-      new ContextGroup(gpu_preferences_, NULL, memory_tracker_,
-                       new ShaderTranslatorCache(gpu_preferences_),
-                       new FramebufferCompletenessCache, feature_info.get(),
-                       new SubscriptionRefSet, new ValueStateMap,
-                       normalized_init.bind_generates_resource));
+  if (command_line) {
+    GpuDriverBugWorkarounds::Initialize(command_line,
+                                        gpu_driver_bug_workarounds_);
+    feature_info = new FeatureInfo(*command_line, gpu_driver_bug_workarounds_);
+  }
+
+  group_ = scoped_refptr<ContextGroup>(new ContextGroup(
+      gpu_preferences_, gpu_driver_bug_workarounds_, NULL, memory_tracker_,
+      new ShaderTranslatorCache(gpu_preferences_),
+      new FramebufferCompletenessCache, feature_info.get(),
+      new SubscriptionRefSet, new ValueStateMap,
+      normalized_init.bind_generates_resource));
   bool use_default_textures = normalized_init.bind_generates_resource;
 
   InSequence sequence;