Reland of Introduced new scheme for controlling the functionality inside the audio processing module

webrtc/modules/audio_processing/audio_processing_impl_unittest.cc

Index: webrtc/modules/audio_processing/audio_processing_impl_unittest.cc
diff --git a/webrtc/modules/audio_processing/audio_processing_impl_unittest.cc b/webrtc/modules/audio_processing/audio_processing_impl_unittest.cc
index cdb42a00386b4c2b39dcd6de169943bf06cbcd7a..a0c208ac7957d42f7952d69abbe0cfe467d2a66d 100644
--- a/webrtc/modules/audio_processing/audio_processing_impl_unittest.cc
+++ b/webrtc/modules/audio_processing/audio_processing_impl_unittest.cc
@@ -23,8 +23,8 @@ namespace webrtc {
 
 class MockInitialize : public AudioProcessingImpl {
  public:
-  explicit MockInitialize(const Config& config) : AudioProcessingImpl(config) {
-  }
+  explicit MockInitialize(const webrtc::Config& config)
+      : AudioProcessingImpl(config) {}
 
   MOCK_METHOD0(InitializeLocked, int());
   int RealInitializeLocked() NO_THREAD_SAFETY_ANALYSIS {
@@ -33,7 +33,7 @@ class MockInitialize : public AudioProcessingImpl {
 };
 
 TEST(AudioProcessingImplTest, AudioParameterChangeTriggersInit) {
-  Config config;
+  webrtc::Config config;
   MockInitialize mock(config);
   ON_CALL(mock, InitializeLocked())
       .WillByDefault(Invoke(&mock, &MockInitialize::RealInitializeLocked));