Add APK targets to build libjingle tests for Android.

talk/app/webrtc/test/androidtestinitializer.cc

Index: talk/app/webrtc/test/androidtestinitializer.cc
diff --git a/talk/app/webrtc/fakemetricsobserver.cc b/talk/app/webrtc/test/androidtestinitializer.cc
similarity index 50%
copy from talk/app/webrtc/fakemetricsobserver.cc
copy to talk/app/webrtc/test/androidtestinitializer.cc
index 4a100a079e58f163466b5eed97c1c91209f10adc..883c2d81782d80f4dedccdb04d4e5ac9ee48ad67 100644
--- a/talk/app/webrtc/fakemetricsobserver.cc
+++ b/talk/app/webrtc/test/androidtestinitializer.cc
@@ -25,55 +25,50 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "talk/app/webrtc/fakemetricsobserver.h"
+#include "talk/app/webrtc/test/androidtestinitializer.h"
+
+#include <pthread.h>
+
+// Note: this dependency is dangerous since it reaches into Chromium's base.
+// There's a risk of e.g. macro clashes. This file may only be used in tests.
+// Since we use Chromes build system for creating the gtest binary, this should
+// be fine.
+#include "base/android/context_utils.h"
+#include "base/android/jni_android.h"
+
+#include "talk/app/webrtc/java/jni/classreferenceholder.h"
+#include "talk/app/webrtc/java/jni/jni_helpers.h"
 #include "webrtc/base/checks.h"
+#include "webrtc/base/ssladapter.h"
+#include "webrtc/voice_engine/include/voe_base.h"
 
 namespace webrtc {
 
-FakeMetricsObserver::FakeMetricsObserver() {
-  Reset();
-}
+namespace {
 
-void FakeMetricsObserver::Reset() {
-  RTC_DCHECK(thread_checker_.CalledOnValidThread());
-  counters_.clear();
-  memset(histogram_samples_, 0, sizeof(histogram_samples_));
-}
+static pthread_once_t g_initialize_once = PTHREAD_ONCE_INIT;
 
-void FakeMetricsObserver::IncrementEnumCounter(
-    PeerConnectionEnumCounterType type,
-    int counter,
-    int counter_max) {
-  RTC_DCHECK(thread_checker_.CalledOnValidThread());
-  if (counters_.size() <= static_cast<size_t>(type)) {
-    counters_.resize(type + 1);
-  }
-  auto& counters = counters_[type];
-  ++counters[counter];
-}
+// There can only be one JNI_OnLoad in each binary. So since this is a GTEST
+// C++ runner binary, we want to initialize the same global objects we normally
+// do if this had been a Java binary.
+void EnsureInitializedOnce() {
+  RTC_CHECK(::base::android::IsVMInitialized());
+  JNIEnv* jni = ::base::android::AttachCurrentThread();
+  JavaVM* jvm = NULL;
+  RTC_CHECK_EQ(0, jni->GetJavaVM(&jvm));
+  jobject context = ::base::android::GetApplicationContext();
 
-void FakeMetricsObserver::AddHistogramSample(PeerConnectionMetricsName type,
-    int value) {
-  RTC_DCHECK(thread_checker_.CalledOnValidThread());
-  RTC_DCHECK_EQ(histogram_samples_[type], 0);
-  histogram_samples_[type] = value;
-}
+  RTC_CHECK_GE(webrtc_jni::InitGlobalJniVariables(jvm), 0);
+  RTC_CHECK(rtc::InitializeSSL()) << "Failed to InitializeSSL()";
+  webrtc_jni::LoadGlobalClassReferenceHolder();
 
-int FakeMetricsObserver::GetEnumCounter(PeerConnectionEnumCounterType type,
-                                        int counter) const {
-  RTC_DCHECK(thread_checker_.CalledOnValidThread());
-  RTC_CHECK(counters_.size() > static_cast<size_t>(type));
-  const auto& it = counters_[type].find(counter);
-  if (it == counters_[type].end()) {
-    return 0;
-  }
-  return it->second;
+  webrtc::VoiceEngine::SetAndroidObjects(jvm, context);
 }
 
-int FakeMetricsObserver::GetHistogramSample(
-    PeerConnectionMetricsName type) const {
-  RTC_DCHECK(thread_checker_.CalledOnValidThread());
-  return histogram_samples_[type];
+}  // anonymous namespace
+
+void InitializeAndroidObjects() {
+  RTC_CHECK_EQ(0, pthread_once(&g_initialize_once, &EnsureInitializedOnce));
 }
 
 }  // namespace webrtc