Copy public headers to the output dir after building static lib for iOS

tools-webrtc/ios/build_ios_libs.py

Index: tools-webrtc/ios/build_ios_libs.py
diff --git a/tools-webrtc/ios/build_ios_libs.py b/tools-webrtc/ios/build_ios_libs.py
index 7af47716c5eaf351783fbee3fa2f2119de11316c..f6c4ebc3771529627c2cfe94b46e3d2518a24bf3 100755
--- a/tools-webrtc/ios/build_ios_libs.py
+++ b/tools-webrtc/ios/build_ios_libs.py
@@ -167,6 +167,12 @@ def main():
     cmd = ['lipo'] + lib_paths + ['-create', '-output', out_lib_path]
     _RunCommand(cmd)
 
+    # Copy public headers into the output dir.
+    logging.info('Copying public headers.')
+    distutils.dir_util.copy_tree(
+        os.path.join(WEBRTC_SRC_DIR, 'webrtc', 'sdk', 'objc',
+                     'Framework', 'Headers', 'WebRTC'),
+        os.path.join(args.output_dir, 'include'))
   elif args.build_type == 'framework':
     lib_paths = [os.path.join(args.output_dir, arch + '_libs')
                  for arch in architectures]