Added support for EXT_frag_depth

gpu/command_buffer/service/feature_info_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/feature_info.h"
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
@@ skipping 796 matching lines @@
   SetupInitExpectations("GL_OES_vertex_array_object");
   CommandLine command_line(0, NULL);
   command_line.AppendSwitchASCII(
       switches::kGpuDriverBugWorkarounds,
       base::IntToString(gpu::USE_CLIENT_SIDE_ARRAYS_FOR_STREAM_BUFFERS));
   info_->AddFeatures(command_line);
   EXPECT_TRUE(info_->workarounds().use_client_side_arrays_for_stream_buffers);
   EXPECT_FALSE(info_->feature_flags().native_vertex_array_object);
 }
 
+TEST_F(FeatureInfoTest, InitializeEXT_frag_depth) {
+  SetupInitExpectations("GL_EXT_frag_depth");
+  info_->Initialize(NULL);
+  EXPECT_TRUE(info_->feature_flags().ext_frag_depth);
+  EXPECT_THAT(info_->extensions(), HasSubstr("GL_EXT_frag_depth"));
+}
+
 TEST_F(FeatureInfoTest, InitializeSamplersWithARBSamplerObjects) {
   SetupInitExpectationsWithGLVersion("GL_ARB_sampler_objects", "OpenGL 3.0");
   info_->Initialize(NULL);
   EXPECT_TRUE(info_->feature_flags().enable_samplers);
 }
 
 TEST_F(FeatureInfoTest, InitializeSamplersWithES3) {
   SetupInitExpectationsWithGLVersion("", "OpenGL ES 3.0");
   info_->Initialize(NULL);
   EXPECT_TRUE(info_->feature_flags().enable_samplers);
@@ skipping 28 matching lines @@
   EXPECT_EQ(0, info_->workarounds().max_cube_map_texture_size);
   EXPECT_EQ(0, info_->workarounds().max_texture_size);
   info_->AddFeatures(command_line);
   EXPECT_TRUE(info_->workarounds().exit_on_context_lost);
   EXPECT_EQ(1024, info_->workarounds().max_cube_map_texture_size);
   EXPECT_EQ(4096, info_->workarounds().max_texture_size);
 }
 
 }  // namespace gles2
 }  // namespace gpu