Annotate logcat with current running test (oemcrypto)

Merge from widevine repo of http://go/wvgerrit/14125

This copies code from http://go/wvgerrit/13847 to the oemcrypto unit
tests.  It puts the test name in the log file.

I also commented out some unused function parameters to avoid compiler
warnings.

Change-Id: I3ba259de2f408ec60e90db7f0ea1524d5aa8f8a4

libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp

@@ -1458,6 +1458,10 @@ class OEMCryptoClientTest : public ::testing::Test {
     wvcdm::Properties::Init();
     ASSERT_EQ(OEMCrypto_SUCCESS, OEMCrypto_Initialize());
     wvcdm::g_cutoff = wvcdm::LOG_INFO;
+    const ::testing::TestInfo* const test_info =
+        ::testing::UnitTest::GetInstance()->current_test_info();
+    LOGD("Running test %s.%s", test_info->name(),
+         test_info->test_case_name());
   }
 
   virtual void TearDown() {