Android: Replace webrtc_jni namespace with nested jni namespace

webrtc/sdk/android/src/jni/jni_onload.cc

Index: webrtc/sdk/android/src/jni/jni_onload.cc
diff --git a/webrtc/sdk/android/src/jni/jni_onload.cc b/webrtc/sdk/android/src/jni/jni_onload.cc
index ce71920331acd9a416f1d556b9c7c1613d2bcf34..8794c12658814d86597946d3cecc240862e59b0c 100644
--- a/webrtc/sdk/android/src/jni/jni_onload.cc
+++ b/webrtc/sdk/android/src/jni/jni_onload.cc
@@ -16,7 +16,8 @@
 #include "webrtc/sdk/android/src/jni/classreferenceholder.h"
 #include "webrtc/sdk/android/src/jni/jni_helpers.h"
 
-namespace webrtc_jni {
+namespace webrtc {
+namespace jni {
 
 extern "C" jint JNIEXPORT JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) {
   jint ret = InitGlobalJniVariables(jvm);
@@ -35,4 +36,5 @@ extern "C" void JNIEXPORT JNICALL JNI_OnUnLoad(JavaVM *jvm, void *reserved) {
   RTC_CHECK(rtc::CleanupSSL()) << "Failed to CleanupSSL()";
 }
 
-}  // namespace webrtc_jni
+}  // namespace jni
+}  // namespace webrtc