Remove FileHistory.h, KeyView.h from .h files

src/AudacityApp.cpp

@@ -100,6 +100,7 @@ It handles initialization and termination by subclassing wxApp.
 #include "widgets/ErrorDialog.h"
 #include "prefs/DirectoriesPrefs.h"
 #include "tracks/ui/Scrubbing.h"
+#include "widgets/FileHistory.h"
 
 //temporarily commented out till it is added to all projects
 //#include "Profiler.h"

src/AudacityApp.h

@@ -24,7 +24,6 @@
 #include <wx/dir.h> // for wxDIR_FILES
 #include <wx/timer.h> // member variable
 
-#include "widgets/FileHistory.h"
 #include "ondemand/ODTaskThread.h"
 
 #if defined(EXPERIMENTAL_CRASH_REPORT)
@@ -41,6 +40,7 @@ class CommandHandler;
 class AppCommandEvent;
 class AudacityLogger;
 class AudacityProject;
+class FileHistory;
 
 void SaveWindowSize();
 

src/Menus.cpp

@@ -48,6 +48,7 @@
 #include "prefs/TracksPrefs.h"
 #include "toolbars/ControlToolBar.h"
 #include "toolbars/ToolManager.h"
+#include "widgets/FileHistory.h"
 
 #include <wx/menu.h>
 

src/menus/FileMenus.cpp

@@ -15,6 +15,7 @@
 #include "../export/Export.h"
 #include "../export/ExportMultiple.h"
 #include "../widgets/ErrorDialog.h"
+#include "../widgets/FileHistory.h"
 
 #ifdef USE_MIDI
 #include "../import/ImportMIDI.h"

src/prefs/KeyConfigPrefs.h

@@ -18,14 +18,14 @@ class ShuttleGui;
 #include <wx/defs.h>
 #include <wx/timer.h> // member variable
 
-#include "../widgets/KeyView.h"
-
 #include "PrefsPanel.h"
 
 class wxRadioButton;
 class wxStaticText;
 class wxTextCtrl;
+class KeyView;
 struct NormalizedKeyString;
+enum ViewByType : int;
 
 class KeyConfigPrefs final : public PrefsPanel
 {

src/widgets/KeyView.h

@@ -59,7 +59,7 @@ public:
 // Declare the KeyNode arrays
 
 // Types of view currently supported
-enum ViewByType
+enum ViewByType : int
 {
    ViewByTree,
    ViewByName,