command_buffer: Guard on extension and profiles in the decoder

gpu/command_buffer/service/gles2_cmd_decoder_unittest_context_state.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_unittest_context_state.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_context_state.cc b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_context_state.cc
index 35a8197003c623dd8f30e70c19e45924bd304a9b..c437780e1e01bf1e91601ff45620b4277d0977b2 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_context_state.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_context_state.cc
@@ -450,6 +450,36 @@ TEST_P(GLES3DecoderTest, ES3PixelStoreiWithPixelUnpackBuffer) {
   DoBindBuffer(GL_PIXEL_UNPACK_BUFFER, client_buffer_id_, kServiceBufferId);
 }
 
+TEST_P(GLES2DecoderManualInitTest, MipmapHintOnCoreProfile) {
+  // On a core profile, glHint(GL_GENERATE_MIPMAP_HINT) should be a noop
+  InitState init;
+  init.gl_version = "3.2";
+  InitDecoder(init);
+
+  cmds::Hint cmd;
+  cmd.Init(GL_GENERATE_MIPMAP_HINT, GL_NICEST);
+
+  EXPECT_CALL(*gl_, Hint(GL_GENERATE_MIPMAP_HINT, GL_NICEST)).Times(0);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));

[Zhenyao Mo, 2016/05/25 21:42:38]

You should check no GL error here.

+}
+
+TEST_P(GLES2DecoderManualInitTest, MipmapHintOnCompatibilityProfile) {
+  // On a compatibility profile, glHint(GL_GENERATE_MIPMAP_HINT) should be go
+  // through
+  InitState init;
+  init.gl_version = "3.2";
+  init.extensions += " GL_ARB_compatibility";
+  InitDecoder(init);
+
+  cmds::Hint cmd;
+  cmd.Init(GL_GENERATE_MIPMAP_HINT, GL_NICEST);
+
+  EXPECT_CALL(*gl_, Hint(GL_GENERATE_MIPMAP_HINT, GL_NICEST))
+      .Times(1)
+      .RetiresOnSaturation();
+  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
+}
+
 // TODO(vmiura): Tests for VAO restore.
 
 // TODO(vmiura): Tests for ContextState::RestoreAttribute().