Build dynamic iOS SDK.

- Places most ObjC code into webrtc/sdk/objc instead.
- New gyp targets to build, strip and export symbols for dylib.
- Removes old script used to generate dylib.

BUG=

Review URL: https://codereview.webrtc.org/1903663002

Cr-Commit-Position: refs/heads/master@{#12524}
diff --git a/webrtc/sdk/objc/Framework/UnitTests/RTCDataChannelConfigurationTest.mm b/webrtc/sdk/objc/Framework/UnitTests/RTCDataChannelConfigurationTest.mm
new file mode 100644
index 0000000..275898d
--- /dev/null
+++ b/webrtc/sdk/objc/Framework/UnitTests/RTCDataChannelConfigurationTest.mm
@@ -0,0 +1,59 @@
+/*
+ *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#import <Foundation/Foundation.h>
+
+#include "webrtc/base/gunit.h"
+
+#import "NSString+StdString.h"
+#import "RTCDataChannelConfiguration+Private.h"
+#import "WebRTC/RTCDataChannelConfiguration.h"
+
+@interface RTCDataChannelConfigurationTest : NSObject
+- (void)testConversionToNativeDataChannelInit;
+@end
+
+@implementation RTCDataChannelConfigurationTest
+
+- (void)testConversionToNativeDataChannelInit {
+  BOOL isOrdered = NO;
+  int maxPacketLifeTime = 5;
+  int maxRetransmits = 4;
+  BOOL isNegotiated = YES;
+  int channelId = 4;
+  NSString *protocol = @"protocol";
+
+  RTCDataChannelConfiguration *dataChannelConfig =
+      [[RTCDataChannelConfiguration alloc] init];
+  dataChannelConfig.isOrdered = isOrdered;
+  dataChannelConfig.maxPacketLifeTime = maxPacketLifeTime;
+  dataChannelConfig.maxRetransmits = maxRetransmits;
+  dataChannelConfig.isNegotiated = isNegotiated;
+  dataChannelConfig.channelId = channelId;
+  dataChannelConfig.protocol = protocol;
+
+  webrtc::DataChannelInit nativeInit = dataChannelConfig.nativeDataChannelInit;
+  EXPECT_EQ(isOrdered, nativeInit.ordered);
+  EXPECT_EQ(maxPacketLifeTime, nativeInit.maxRetransmitTime);
+  EXPECT_EQ(maxRetransmits, nativeInit.maxRetransmits);
+  EXPECT_EQ(isNegotiated, nativeInit.negotiated);
+  EXPECT_EQ(channelId, nativeInit.id);
+  EXPECT_EQ(protocol.stdString, nativeInit.protocol);
+}
+
+@end
+
+TEST(RTCDataChannelConfiguration, NativeDataChannelInitConversionTest) {
+  @autoreleasepool {
+    RTCDataChannelConfigurationTest *test =
+        [[RTCDataChannelConfigurationTest alloc] init];
+    [test testConversionToNativeDataChannelInit];
+  }
+}