Reland "Added option to specify a maximum file size when recording an AEC dump.", commit ae2c5ad12afc8cc29fe9c59dea432b697b871a87.

The revert of the original CL was commit 36d4c545007129446e551c45c17b25377dce89a4.
Original review: https://codereview.webrtc.org/1413483003/

The original CL changes a function on audio_processing.h that is used by Chrome, this CL adds back the old function.

TBR=glaznev@webrtc.org, henrik.lundin@webrtc.org, solenberg@google.com, henrikg@webrtc.org, perkj@webrtc.org
BUG=webrtc:4741
Committed: https://crrev.com/f4f5cb09277d5ef6aeac8341e5f54a055867803a
Cr-Commit-Position: refs/heads/master@{#11093}

Review URL: https://codereview.webrtc.org/1540103002

Cr-Commit-Position: refs/heads/master@{#11267}
diff --git a/webrtc/modules/audio_processing/audio_processing_impl.h b/webrtc/modules/audio_processing/audio_processing_impl.h
index b310896..fbb9b6e 100644
--- a/webrtc/modules/audio_processing/audio_processing_impl.h
+++ b/webrtc/modules/audio_processing/audio_processing_impl.h
@@ -57,8 +57,10 @@
   int Initialize(const ProcessingConfig& processing_config) override;
   void SetExtraOptions(const Config& config) override;
   void UpdateHistogramsOnCallEnd() override;
-  int StartDebugRecording(const char filename[kMaxFilenameSize]) override;
-  int StartDebugRecording(FILE* handle) override;
+  int StartDebugRecording(const char filename[kMaxFilenameSize],
+                          int64_t max_log_size_bytes) override;
+  int StartDebugRecording(FILE* handle, int64_t max_log_size_bytes) override;
+
   int StartDebugRecordingForPlatformFile(rtc::PlatformFile handle) override;
   int StopDebugRecording() override;
 
@@ -144,6 +146,9 @@
 
   struct ApmDebugDumpState {
     ApmDebugDumpState() : debug_file(FileWrapper::Create()) {}
+    // Number of bytes that can still be written to the log before the maximum
+    // size is reached. A value of <= 0 indicates that no limit is used.
+    int64_t num_bytes_left_for_log_ = -1;
     rtc::scoped_ptr<FileWrapper> debug_file;
     ApmDebugDumpThreadState render;
     ApmDebugDumpThreadState capture;
@@ -222,6 +227,7 @@
   // TODO(andrew): make this more graceful. Ideally we would split this stuff
   // out into a separate class with an "enabled" and "disabled" implementation.
   static int WriteMessageToDebugFile(FileWrapper* debug_file,
+                                     int64_t* filesize_limit_bytes,
                                      rtc::CriticalSection* crit_debug,
                                      ApmDebugDumpThreadState* debug_state);
   int WriteInitMessage() EXCLUSIVE_LOCKS_REQUIRED(crit_render_, crit_capture_);