address review comments.

tensorflow/lite/micro/BUILD

@@ -248,6 +248,7 @@ tflite_micro_cc_test(
         "micro_interpreter_test.cc",
     ],
     deps = [
+        ":micro_compatibility",
         ":micro_framework",
         ":micro_utils",
         ":op_resolvers",

tensorflow/lite/micro/benchmarks/keyword_benchmark.cc

@@ -84,14 +84,14 @@ int main(int argc, char** argv) {
       CreateBenchmarkRunner(&profiler);
   profiler.EndEvent(event_handle);
   profiler.Log();
-  MicroPrintf("");
+  MicroPrintf("");  // null MicroPrintf serves as a newline.
 
   tflite::KeywordRunNIerations(1, "KeywordRunNIerations(1)", *benchmark_runner,
                                profiler);
   profiler.Log();
-  MicroPrintf("");
+  MicroPrintf("");  // null MicroPrintf serves as a newline.
 
   tflite::KeywordRunNIerations(10, "KeywordRunNIerations(10)",
                                *benchmark_runner, profiler);
-  MicroPrintf("");
+  MicroPrintf("");  // null MicroPrintf serves as a newline.
 }

tensorflow/lite/micro/micro_interpreter_test.cc

@@ -19,6 +19,7 @@ limitations under the License.
 
 #include "tensorflow/lite/core/api/flatbuffer_conversions.h"
 #include "tensorflow/lite/micro/all_ops_resolver.h"
+#include "tensorflow/lite/micro/compatibility.h"
 #include "tensorflow/lite/micro/micro_error_reporter.h"
 #include "tensorflow/lite/micro/micro_profiler.h"
 #include "tensorflow/lite/micro/micro_utils.h"
@@ -46,6 +47,8 @@ class MockProfiler : public MicroProfiler {
  private:
   int event_starts_;
   int event_ends_;
+
+  TF_LITE_REMOVE_VIRTUAL_DELETE
 };
 
 }  // namespace

tensorflow/lite/micro/micro_profiler.h

@@ -18,6 +18,8 @@ limitations under the License.
 
 #include <cstdint>
 
+#include "tensorflow/lite/micro/compatibility.h"
+
 namespace tflite {
 
 // MicroProfiler creates a common way to gain fine-grained insight into runtime
@@ -27,7 +29,7 @@ namespace tflite {
 class MicroProfiler {
  public:
   MicroProfiler() = default;
-  ~MicroProfiler() = default;
+  virtual ~MicroProfiler() = default;
 
   // Marks the start of a new event and returns an event handle that can be used
   // to mark the end of the event via EndEvent. The lifetime of the tag
@@ -64,6 +66,8 @@ class MicroProfiler {
   int32_t start_ticks_[kMaxEvents];
   int32_t end_ticks_[kMaxEvents];
   int num_events_ = 0;
+
+  TF_LITE_REMOVE_VIRTUAL_DELETE;
 };
 
 #if defined(NDEBUG)