command_buffer: Use GLSL core version that matches the OpenGL version

gpu/command_buffer/service/shader_translator.cc

Index: gpu/command_buffer/service/shader_translator.cc
diff --git a/gpu/command_buffer/service/shader_translator.cc b/gpu/command_buffer/service/shader_translator.cc
index 04e12276afb372a6707355e912ab5ae04a24ae3a..ecd2358bf77d66ef5ab69b674a39a088cd5a4c0d 100644
--- a/gpu/command_buffer/service/shader_translator.cc
+++ b/gpu/command_buffer/service/shader_translator.cc
@@ -98,16 +98,14 @@ ShaderTranslator::DestructionObserver::~DestructionObserver() {
 
 ShaderTranslator::ShaderTranslator()
     : compiler_(NULL),
-      implementation_is_glsl_es_(false),
       driver_bug_workarounds_(static_cast<ShCompileOptions>(0)) {
 }
 
-bool ShaderTranslator::Init(
-    GLenum shader_type,
-    ShShaderSpec shader_spec,
-    const ShBuiltInResources* resources,
-    ShaderTranslatorInterface::GlslImplementationType glsl_implementation_type,
-    ShCompileOptions driver_bug_workarounds) {
+bool ShaderTranslator::Init(GLenum shader_type,
+                            ShShaderSpec shader_spec,
+                            const ShBuiltInResources* resources,
+                            ShShaderOutput shader_output_language,
+                            ShCompileOptions driver_bug_workarounds) {
   // Make sure Init is called only once.
   DCHECK(compiler_ == NULL);
   DCHECK(shader_type == GL_FRAGMENT_SHADER || shader_type == GL_VERTEX_SHADER);
@@ -117,27 +115,12 @@ bool ShaderTranslator::Init(
 
   g_translator_initializer.Get();
 
-  ShShaderOutput shader_output;
-  if (glsl_implementation_type == kGlslES) {
-    shader_output = SH_ESSL_OUTPUT;
-  } else {
-    // TODO(kbr): clean up the tests of shader_spec and
-    // gfx::GetGLImplementation(). crbug.com/471960
-    if (shader_spec == SH_WEBGL2_SPEC ||
-        gfx::GetGLImplementation() ==
-            gfx::kGLImplementationDesktopGLCoreProfile) {
-      shader_output = SH_GLSL_410_CORE_OUTPUT;
-    } else {
-      shader_output = SH_GLSL_COMPATIBILITY_OUTPUT;
-    }
-  }
 
   {
     TRACE_EVENT0("gpu", "ShConstructCompiler");
-    compiler_ = ShConstructCompiler(
-        shader_type, shader_spec, shader_output, resources);
+    compiler_ = ShConstructCompiler(shader_type, shader_spec,
+                                    shader_output_language, resources);
   }
-  implementation_is_glsl_es_ = (glsl_implementation_type == kGlslES);
   driver_bug_workarounds_ = driver_bug_workarounds;
   return compiler_ != NULL;
 }