Remove top-level const from parameters in function declarations.

This is a safe cleanup change since top-level const applied to
parameters in function declarations (that are not also
definitions) are ignored by the compiler. Hence, such changes do
not change the type of the declared functions and are simply
no-ops.

Bug: webrtc:13610
Change-Id: Ibafb92c45119a6d8bdb6f9109aa8dad6385163a9
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/249086
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Ali Tofigh <alito@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35802}

modules/audio_coding/neteq/tools/audio_loop.h

@@ -36,7 +36,7 @@ class AudioLoop {
   // greater. Otherwise, the loop length is the same as the file length.
   // The audio will be delivered in blocks of `block_length_samples`.
   // Returns false if the initialization failed, otherwise true.
-  bool Init(const std::string file_name,
+  bool Init(std::string file_name,
             size_t max_loop_length_samples,
             size_t block_length_samples);
 

modules/audio_coding/neteq/tools/input_audio_file.h

@@ -21,7 +21,7 @@ namespace test {
 // Class for handling a looping input audio file.
 class InputAudioFile {
  public:
-  explicit InputAudioFile(const std::string file_name, bool loop_at_end = true);
+  explicit InputAudioFile(std::string file_name, bool loop_at_end = true);
 
   virtual ~InputAudioFile();