Rename media constraints model and store.

webrtc/examples/objc/AppRTCMobile/ios/ARDSettingsViewController.m

Index: webrtc/examples/objc/AppRTCMobile/ios/ARDSettingsViewController.m
diff --git a/webrtc/examples/objc/AppRTCMobile/ios/ARDSettingsViewController.m b/webrtc/examples/objc/AppRTCMobile/ios/ARDSettingsViewController.m
index 1df98926732bb45d8d89e50e54406a6469ad8059..ad11649884fbe378aff47fd09f6c069bdc9809df 100644
--- a/webrtc/examples/objc/AppRTCMobile/ios/ARDSettingsViewController.m
+++ b/webrtc/examples/objc/AppRTCMobile/ios/ARDSettingsViewController.m
@@ -9,11 +9,11 @@
  */
 
 #import "ARDSettingsViewController.h"
-#import "ARDMediaConstraintsModel.h"
+#import "ARDSettingsModel.h"
 
 NS_ASSUME_NONNULL_BEGIN
 @interface ARDSettingsViewController () {
-  ARDMediaConstraintsModel *_mediaConstraintsModel;
+  ARDSettingsModel *_settingsModel;
 }
 
 @end
@@ -21,10 +21,10 @@ NS_ASSUME_NONNULL_BEGIN
 @implementation ARDSettingsViewController
 
 - (instancetype)initWithStyle:(UITableViewStyle)style
-        mediaConstraintsModel:(ARDMediaConstraintsModel *)mediaConstraintsModel {
+                settingsModel:(ARDSettingsModel *)settingsModel {
   self = [super initWithStyle:style];
   if (self) {
-    _mediaConstraintsModel = mediaConstraintsModel;
+    _settingsModel = settingsModel;
   }
   return self;
 }
@@ -45,7 +45,7 @@ NS_ASSUME_NONNULL_BEGIN
 #pragma mark - Data source
 
 - (NSArray<NSString *> *)mediaConstraintsArray {
-  return _mediaConstraintsModel.availableVideoResoultionsMediaConstraints;
+  return _settingsModel.availableVideoResoultionsMediaConstraints;
 }
 
 #pragma mark -
@@ -59,7 +59,7 @@ NS_ASSUME_NONNULL_BEGIN
 }
 
 - (void)selectCurrentlyStoredOrDefaultMediaConstraints {
-  NSString *currentSelection = [_mediaConstraintsModel currentVideoResoultionConstraintFromStore];
+  NSString *currentSelection = [_settingsModel currentVideoResoultionConstraintFromStore];
 
   NSUInteger indexOfSelection = [[self mediaConstraintsArray] indexOfObject:currentSelection];
   NSIndexPath *pathToBeSelected = [NSIndexPath indexPathForRow:indexOfSelection inSection:0];
@@ -147,7 +147,7 @@ NS_ASSUME_NONNULL_BEGIN
   cell.accessoryType = UITableViewCellAccessoryCheckmark;
 
   NSString *mediaConstraintsString = self.mediaConstraintsArray[indexPath.row];
-  [_mediaConstraintsModel storeVideoResoultionConstraint:mediaConstraintsString];
+  [_settingsModel storeVideoResoultionConstraint:mediaConstraintsString];
 }
 
 - (NSIndexPath *)tableView:(UITableView *)tableView