Major AEC3 render pipeline changes

webrtc/modules/audio_processing/aec3/mock/mock_echo_remover.h

Index: webrtc/modules/audio_processing/aec3/mock/mock_echo_remover.h
diff --git a/webrtc/modules/audio_processing/aec3/mock/mock_echo_remover.h b/webrtc/modules/audio_processing/aec3/mock/mock_echo_remover.h
index 6cde439ed6f8b3ab4edceaf3e649ec1c4deebdd6..b016a7f5d5c60302e00da5e2074202aa7906f74c 100644
--- a/webrtc/modules/audio_processing/aec3/mock/mock_echo_remover.h
+++ b/webrtc/modules/audio_processing/aec3/mock/mock_echo_remover.h
@@ -16,6 +16,7 @@
 #include "webrtc/base/optional.h"
 #include "webrtc/modules/audio_processing/aec3/echo_path_variability.h"
 #include "webrtc/modules/audio_processing/aec3/echo_remover.h"
+#include "webrtc/modules/audio_processing/aec3/render_buffer.h"
 #include "webrtc/test/gmock.h"
 
 namespace webrtc {
@@ -25,11 +26,11 @@ class MockEchoRemover : public EchoRemover {
  public:
   virtual ~MockEchoRemover() = default;
 
-  MOCK_METHOD5(ProcessBlock,
+  MOCK_METHOD5(ProcessCapture,
                void(const rtc::Optional<size_t>& echo_path_delay_samples,
                     const EchoPathVariability& echo_path_variability,
                     bool capture_signal_saturation,
-                    const std::vector<std::vector<float>>& render,
+                    const RenderBuffer& render_buffer,
                     std::vector<std::vector<float>>* capture));
 
   MOCK_METHOD1(UpdateEchoLeakageStatus, void(bool leakage_detected));