Build WebRTC with data channel only.

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

Index: webrtc/sdk/android/src/jni/peerconnection_jni.cc
diff --git a/webrtc/sdk/android/src/jni/peerconnection_jni.cc b/webrtc/sdk/android/src/jni/peerconnection_jni.cc
index c07d58faffc6210116057b02cf9d52f3a9432ea8..f0f4c6c32928fb5a9be10316894123d7e586ff83 100644
--- a/webrtc/sdk/android/src/jni/peerconnection_jni.cc
+++ b/webrtc/sdk/android/src/jni/peerconnection_jni.cc
@@ -61,18 +61,37 @@
 #include "webrtc/base/ssladapter.h"
 #include "webrtc/base/stringutils.h"
 #include "webrtc/media/base/videocapturer.h"
-#include "webrtc/media/engine/webrtcvideodecoderfactory.h"
-#include "webrtc/media/engine/webrtcvideoencoderfactory.h"
+
+// Adding 'nogncheck' to disable the gn include header check. We don't want to
+// depend on audio and video related targets when build the datachannel only
+// targets.
+#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
+#include "webrtc/media/engine/webrtcvideodecoderfactory.h"  // nogncheck
+#include "webrtc/media/engine/webrtcvideoencoderfactory.h"  // nogncheck
+#endif
+
 #include "webrtc/modules/utility/include/jvm_android.h"
 #include "webrtc/system_wrappers/include/field_trial.h"
 #include "webrtc/pc/webrtcsdp.h"
-#include "webrtc/sdk/android/src/jni/androidmediadecoder_jni.h"
-#include "webrtc/sdk/android/src/jni/androidmediaencoder_jni.h"
+
+#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
+#include "webrtc/sdk/android/src/jni/androidmediadecoder_jni.h"  // nogncheck
+#include "webrtc/sdk/android/src/jni/androidmediaencoder_jni.h"  // nogncheck
+#endif
+
 #include "webrtc/sdk/android/src/jni/androidnetworkmonitor_jni.h"
-#include "webrtc/sdk/android/src/jni/androidvideotracksource.h"
+
+#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
+#include "webrtc/sdk/android/src/jni/androidvideotracksource.h"  // nogncheck
+#endif
+
 #include "webrtc/sdk/android/src/jni/classreferenceholder.h"
 #include "webrtc/sdk/android/src/jni/jni_helpers.h"
-#include "webrtc/sdk/android/src/jni/native_handle_impl.h"
+
+#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
+#include "webrtc/sdk/android/src/jni/native_handle_impl.h"  // nogncheck
+#endif
+
 #include "webrtc/sdk/android/src/jni/rtcstatscollectorcallbackwrapper.h"
 // Adding 'nogncheck' to disable the gn include headers check.
 // We don't want to depend on 'system_wrappers:field_trial_default' because
@@ -80,7 +99,7 @@
 #include "webrtc/system_wrappers/include/field_trial_default.h" // nogncheck
 #include "webrtc/system_wrappers/include/logcat_trace_context.h"
 #include "webrtc/system_wrappers/include/trace.h"
-#include "webrtc/voice_engine/include/voe_base.h"
+#include "webrtc/voice_engine/include/voe_base.h"  // nogncheck
 
 using cricket::WebRtcVideoDecoderFactory;
 using cricket::WebRtcVideoEncoderFactory;
@@ -920,15 +939,23 @@ class JavaVideoRendererWrapper
 
   // Return a VideoRenderer.I420Frame referring texture object in |frame|.
   jobject CricketToJavaTextureFrame(const webrtc::VideoFrame* frame) {
+    jfloatArray sampling_matrix;
+#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
     NativeHandleImpl* handle = reinterpret_cast<NativeHandleImpl*>(
         frame->video_frame_buffer()->native_handle());
-    jfloatArray sampling_matrix = handle->sampling_matrix.ToJava(jni());
-
+    sampling_matrix = handle->sampling_matrix.ToJava(jni());
     return jni()->NewObject(
-        *j_frame_class_, j_texture_frame_ctor_id_,
-        frame->width(), frame->height(),
-        static_cast<int>(frame->rotation()),
+        *j_frame_class_, j_texture_frame_ctor_id_, frame->width(),
+        frame->height(), static_cast<int>(frame->rotation()),
         handle->oes_texture_id, sampling_matrix, javaShallowCopy(frame));
+#else
+    jint texture_id = 0;
+    sampling_matrix = jni()->NewFloatArray(16);
+    return jni()->NewObject(*j_frame_class_, j_texture_frame_ctor_id_,
+                            frame->width(), frame->height(),
+                            static_cast<int>(frame->rotation()), texture_id,
+                            sampling_matrix, javaShallowCopy(frame));
+#endif
   }
 
   JNIEnv* jni() {
@@ -1353,10 +1380,12 @@ JOW(jlong, PeerConnectionFactory_nativeCreatePeerConnectionFactory)(
     options = ParseOptionsFromJava(jni, joptions);
   }
 
+#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
   if (video_hw_acceleration_enabled) {
     encoder_factory = new MediaCodecVideoEncoderFactory();
     decoder_factory = new MediaCodecVideoDecoderFactory();
   }
+#endif
   // Do not create network_monitor_factory only if the options are
   // provided and disable_network_monitor therein is set to true.
   if (!(has_options && options.disable_network_monitor)) {
@@ -1416,6 +1445,7 @@ JOW(jlong, PeerConnectionFactory_nativeCreateLocalMediaStream)(
 JOW(jlong, PeerConnectionFactory_nativeCreateVideoSource)
 (JNIEnv* jni, jclass, jlong native_factory, jobject j_egl_context,
     jboolean is_screencast) {
+#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
   OwnedFactoryAndThreads* factory =
       reinterpret_cast<OwnedFactoryAndThreads*>(native_factory);
 
@@ -1427,6 +1457,9 @@ JOW(jlong, PeerConnectionFactory_nativeCreateVideoSource)
                                             factory->worker_thread(), source);
 
   return (jlong)proxy_source.release();
+#else
+  return (jlong)0;
+#endif
 }
 
 JOW(void, PeerConnectionFactory_nativeInitializeVideoCapturer)
@@ -1436,6 +1469,7 @@ JOW(void, PeerConnectionFactory_nativeInitializeVideoCapturer)
  jobject j_video_capturer,
  jlong native_source,
  jobject j_frame_observer) {
+#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
   LOG(LS_INFO) << "PeerConnectionFactory_nativeInitializeVideoCapturer";
   rtc::scoped_refptr<PeerConnectionFactoryInterface> factory(
       factoryFromJava(native_factory));
@@ -1455,6 +1489,7 @@ JOW(void, PeerConnectionFactory_nativeInitializeVideoCapturer)
           : nullptr,
       j_application_context, j_frame_observer);
   CHECK_EXCEPTION(jni) << "error during VideoCapturer.initialize()";
+#endif
 }
 
 JOW(jlong, PeerConnectionFactory_nativeCreateVideoTrack)(
@@ -1529,6 +1564,7 @@ JOW(void, PeerConnectionFactory_nativeSetOptions)(
 JOW(void, PeerConnectionFactory_nativeSetVideoHwAccelerationOptions)(
     JNIEnv* jni, jclass, jlong native_factory, jobject local_egl_context,
     jobject remote_egl_context) {
+#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
   OwnedFactoryAndThreads* owned_factory =
       reinterpret_cast<OwnedFactoryAndThreads*>(native_factory);
 
@@ -1551,6 +1587,7 @@ JOW(void, PeerConnectionFactory_nativeSetVideoHwAccelerationOptions)(
     LOG(LS_INFO) << "Set EGL context for HW decoding.";
     decoder_factory->SetEGLContext(jni, remote_egl_context);
   }
+#endif
 }
 
 static PeerConnectionInterface::IceTransportsType