AnalyzeReverseStream with StreamConfig

Adding a version of AnalyzeReverseStream with audio parameters
described by StreamConfig. This is part of preparations for
multichannel APM in Chromium.

Bug: webrtc:10913
Change-Id: I7c4650eab8bd7fcdec970a7e4a8fa203f09bed9e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/157897
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29573}

modules/audio_processing/include/mock_audio_processing.h

@@ -97,6 +97,9 @@ class MockAudioProcessing : public ::testing::NiceMock<AudioProcessing> {
                    size_t samples_per_channel,
                    int sample_rate_hz,
                    ChannelLayout layout));
+  MOCK_METHOD2(AnalyzeReverseStream,
+               int(const float* const* data,
+                   const StreamConfig& reverse_config));
   MOCK_METHOD4(ProcessReverseStream,
                int(const float* const* src,
                    const StreamConfig& input_config,