Adopt absl::string_view in modules/audio_processing/

Bug: webrtc:13579
Change-Id: Idb05a64cfd16aed68d40cd427a6b516caa5e2077
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/269387
Reviewed-by: Ivo Creusen <ivoc@webrtc.org>
Commit-Queue: Ali Tofigh <alito@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37800}

modules/audio_processing/test/debug_dump_test.cc

diff --git a/modules/audio_processing/test/debug_dump_test.cc b/modules/audio_processing/test/debug_dump_test.cc
index b735160..d69d3a4 100644
--- a/modules/audio_processing/test/debug_dump_test.cc
+++ b/modules/audio_processing/test/debug_dump_test.cc
@@ -14,6 +14,7 @@
 #include <string>
 #include <vector>
 
+#include "absl/strings/string_view.h"
 #include "api/audio/echo_canceller3_factory.h"
 #include "modules/audio_coding/neteq/tools/resample_input_audio_file.h"
 #include "modules/audio_processing/aec_dump/aec_dump_factory.h"
@@ -41,13 +42,13 @@
 
 class DebugDumpGenerator {
  public:
-  DebugDumpGenerator(const std::string& input_file_name,
+  DebugDumpGenerator(absl::string_view input_file_name,
                      int input_rate_hz,
                      int input_channels,
-                     const std::string& reverse_file_name,
+                     absl::string_view reverse_file_name,
                      int reverse_rate_hz,
                      int reverse_channels,
-                     const std::string& dump_file_name,
+                     absl::string_view dump_file_name,
                      bool enable_pre_amplifier);
 
   // Constructor that uses default input files.
@@ -115,13 +116,13 @@
   const std::string dump_file_name_;
 };
 
-DebugDumpGenerator::DebugDumpGenerator(const std::string& input_file_name,
+DebugDumpGenerator::DebugDumpGenerator(absl::string_view input_file_name,
                                        int input_rate_hz,
                                        int input_channels,
-                                       const std::string& reverse_file_name,
+                                       absl::string_view reverse_file_name,
                                        int reverse_rate_hz,
                                        int reverse_channels,
-                                       const std::string& dump_file_name,
+                                       absl::string_view dump_file_name,
                                        bool enable_pre_amplifier)
     : input_config_(input_rate_hz, input_channels),
       reverse_config_(reverse_rate_hz, reverse_channels),
@@ -254,13 +255,13 @@
   // VerifyDebugDump replays a debug dump using APM and verifies that the result
   // is bit-exact-identical to the output channel in the dump. This is only
   // guaranteed if the debug dump is started on the first frame.
-  void VerifyDebugDump(const std::string& in_filename);
+  void VerifyDebugDump(absl::string_view in_filename);
 
  private:
   DebugDumpReplayer debug_dump_replayer_;
 };
 
-void DebugDumpTest::VerifyDebugDump(const std::string& in_filename) {
+void DebugDumpTest::VerifyDebugDump(absl::string_view in_filename) {
   ASSERT_TRUE(debug_dump_replayer_.SetDumpFile(in_filename));
 
   while (const absl::optional<audioproc::Event> event =