Only allow TexStorage2DEXT if we expose the extension

gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc b/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
index 66a449a0d0c976070d6c9d54fc9c09470a648739..bde95b076ca14b79efa1a502d85d151a5891096b 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
@@ -1229,6 +1229,7 @@ TEST_P(GLES2DecoderManualInitTest, MemoryTrackerTexStorage2DEXT) {
       new SizeOnlyMemoryTracker();
   set_memory_tracker(memory_tracker.get());
   InitState init;
+  init.extensions = "GL_EXT_texture_storage";
   init.bind_generates_resource = true;
   InitDecoder(init);
   DoBindTexture(GL_TEXTURE_2D, client_texture_id_, kServiceTextureId);