Add driver bug workaround for SH_INIT_GL_POSITION.

gpu/command_buffer/service/shader_translator_unittest.cc

Index: gpu/command_buffer/service/shader_translator_unittest.cc
diff --git a/gpu/command_buffer/service/shader_translator_unittest.cc b/gpu/command_buffer/service/shader_translator_unittest.cc
index a08851adcf8754ad84bcc7feaf4ba68a5390f291..16bd17bc723dd3a105030b4e941eb91a34530633 100644
--- a/gpu/command_buffer/service/shader_translator_unittest.cc
+++ b/gpu/command_buffer/service/shader_translator_unittest.cc
@@ -28,11 +28,11 @@ class ShaderTranslatorTest : public testing::Test {
     ASSERT_TRUE(vertex_translator_->Init(
         SH_VERTEX_SHADER, SH_GLES2_SPEC, &resources,
         ShaderTranslatorInterface::kGlsl,
-        ShaderTranslatorInterface::kGlslBuiltInFunctionEmulated));
+        SH_EMULATE_BUILT_IN_FUNCTIONS));
     ASSERT_TRUE(fragment_translator_->Init(
         SH_FRAGMENT_SHADER, SH_GLES2_SPEC, &resources,
         ShaderTranslatorInterface::kGlsl,
-        ShaderTranslatorInterface::kGlslBuiltInFunctionOriginal));
+        0));
     // Post-init the results must be empty.
     // Vertex translator results.
     EXPECT_TRUE(vertex_translator_->translated_shader() == NULL);
@@ -232,16 +232,16 @@ TEST_F(ShaderTranslatorTest, OptionsString) {
   ASSERT_TRUE(translator_1->Init(
       SH_VERTEX_SHADER, SH_GLES2_SPEC, &resources,
       ShaderTranslatorInterface::kGlsl,
-      ShaderTranslatorInterface::kGlslBuiltInFunctionEmulated));
+      SH_EMULATE_BUILT_IN_FUNCTIONS));
   ASSERT_TRUE(translator_2->Init(
       SH_FRAGMENT_SHADER, SH_GLES2_SPEC, &resources,
       ShaderTranslatorInterface::kGlsl,
-      ShaderTranslatorInterface::kGlslBuiltInFunctionOriginal));
+      0));
   resources.EXT_draw_buffers = 1;
   ASSERT_TRUE(translator_3->Init(
       SH_VERTEX_SHADER, SH_GLES2_SPEC, &resources,
       ShaderTranslatorInterface::kGlsl,
-      ShaderTranslatorInterface::kGlslBuiltInFunctionEmulated));
+      SH_EMULATE_BUILT_IN_FUNCTIONS));
 
   std::string options_1(
       translator_1->GetStringForOptionsThatWouldEffectCompilation());