Merge beamformer

R=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/34529004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7958 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_processing/BUILD.gn b/webrtc/modules/audio_processing/BUILD.gn
index 01a4d7b..da121f3 100644
--- a/webrtc/modules/audio_processing/BUILD.gn
+++ b/webrtc/modules/audio_processing/BUILD.gn
@@ -72,6 +72,10 @@
     "audio_buffer.h",
     "audio_processing_impl.cc",
     "audio_processing_impl.h",
+    "beamformer/complex_matrix.h",
+    "beamformer/covariance_matrix_generator.cc",
+    "beamformer/covariance_matrix_generator.h",
+    "beamformer/matrix.h",
     "channel_buffer.cc",
     "channel_buffer.h",
     "common.h",
@@ -167,6 +171,13 @@
     ]
   }
 
+  if (rtc_use_openmax_dl) {
+    sources += [
+      "beamformer/beamformer.cc",
+      "beamformer/beamformer.h",
+    ]
+  }
+
   if (cpu_arch == "x86" || cpu_arch == "x64") {
     deps += [ ":audio_processing_sse2" ]
   }