iOS: Move AppRTC logging methods to public headers.

talk/examples/objc/AppRTCDemo/ios/ARDAppDelegate.m

 /*
  * libjingle
  * Copyright 2013 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
  *     this list of conditions and the following disclaimer in the documentation
  *     and/or other materials provided with the distribution.
  *  3. The name of the author may not be used to endorse or promote products
  *     derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #import "ARDAppDelegate.h"
 
-#import "ARDLogging.h"
+#import "RTCLogging.h"
+#import "RTCPeerConnectionFactory.h"
+
 #import "ARDMainViewController.h"
-#import "RTCPeerConnectionFactory.h"
 
 @implementation ARDAppDelegate {
   UIWindow *_window;
 }
 
 #pragma mark - UIApplicationDelegate methods
 
 - (BOOL)application:(UIApplication *)application
     didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
   [RTCPeerConnectionFactory initializeSSL];
   _window =  [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
   [_window makeKeyAndVisible];
   ARDMainViewController *viewController = [[ARDMainViewController alloc] init];
   _window.rootViewController = viewController;
-  ARDLogInit();
+
+#ifndef _DEBUG
+  // In debug builds the default level is LS_INFO and in non-debug builds it is
+  // disabled. Continue to log to console in non-debug builds, but only
+  // warnings and errors.
+  RTCSetMinDebugLogLevel(kRTCLoggingSeverityWarning);
+#endif
+
   return YES;
 }
 
 - (void)applicationWillResignActive:(UIApplication *)application {
   ARDMainViewController *viewController =
       (ARDMainViewController *)_window.rootViewController;
   [viewController applicationWillResignActive:application];
 }
 
 - (void)applicationWillTerminate:(UIApplication *)application {
   [RTCPeerConnectionFactory deinitializeSSL];
 }
 
 @end