Fix double google initialization when using the python gemma wrapper

BUILD.bazel

@@ -885,6 +885,7 @@ cc_test(
         ":benchmark_helper",
         ":gemma_lib",
         "@googletest//:gtest_main",  # buildcleaner: keep
+        "//io",
         "@highway//:hwy",
         "@highway//:hwy_test_util",
         "@highway//:nanobenchmark",

evals/benchmark_helper.cc

@@ -37,8 +37,7 @@
 namespace gcpp {
 
 GemmaEnv::GemmaEnv(const GemmaArgs& args)
-    : initializer_value_(gcpp::InternalInit()),
-      ctx_(args.threading),
+    : ctx_(args.threading),
       env_(ctx_),
       gemma_(args, ctx_) {
   const ModelConfig& config = gemma_.Config();

evals/benchmark_helper.h

@@ -125,8 +125,6 @@ class GemmaEnv {
   MatMulEnv& MutableEnv() { return env_; }
 
  private:
-  // This is used to ensure that InternalInit is called before anything else.
-  int initializer_value_ = 0;
   ThreadingContext ctx_;
   MatMulEnv env_;
   Gemma gemma_;

evals/gemma_batch_bench.cc

@@ -21,6 +21,7 @@
 
 #include "evals/benchmark_helper.h"
 #include "gemma/gemma.h"
+#include "io/io.h"
 #include "hwy/base.h"
 #include "hwy/nanobenchmark.h"
 #include "hwy/profiler.h"
@@ -146,6 +147,8 @@ TEST_F(GemmaBatchBench, RandomQuestionsBatched) {
 }  // namespace gcpp
 
 int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+
   fprintf(stderr, "GemmaEnv setup..\n");
   gcpp::ConsumedArgs consumed(argc, argv);
   gcpp::GemmaArgs args(argc, argv, consumed);
@@ -154,7 +157,6 @@ int main(int argc, char** argv) {
   gcpp::GemmaEnv env(args);
   gcpp::s_env = &env;
 
-  testing::InitGoogleTest(&argc, argv);
 
   return RUN_ALL_TESTS();
 }