Restore samplers' state across virtualized GL contexts.

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 2187f4961f84c9aeb6d366bfcf033b22f6d34dcb..2d11511e7aa1283ff9c8b5b7aa6ba62e26f0304d 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
@@ -2054,6 +2054,10 @@ void GLES2DecoderTestBase::SetupTexture() {
                kSharedMemoryId, kSharedMemoryOffset);
 };
 
+void GLES2DecoderTestBase::SetupSampler() {
+  DoBindSampler(0, client_sampler_id_, kServiceSamplerId);
+};
+
 void GLES2DecoderTestBase::DeleteVertexBuffer() {
   DoDeleteBuffer(client_buffer_id_, kServiceBufferId);
 }