Include i420 buffers in Obj-C framework again.

These headers was lost in the cleanup CL for the Obj-C directories. This
puts them back in the framework headers.

Note that since the protocol and interface was split into two different
headers, and all public framework headers are put into a flat directory
structure, I had to rename the implementation files so they would not collide
in the framework header directory.

Bug: webrtc:9701
Change-Id: I42d4c1e02bdfa4e114575f527c4c42a19be8fb52
Reviewed-on: https://webrtc-review.googlesource.com/97330
Reviewed-by: Peter Hanspers <peterhanspers@webrtc.org>
Commit-Queue: Anders Carlsson <andersc@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24539}
diff --git a/sdk/objc/api/RTCVideoRendererAdapter.mm b/sdk/objc/api/RTCVideoRendererAdapter.mm
index d30c4e7..27dd6c2 100644
--- a/sdk/objc/api/RTCVideoRendererAdapter.mm
+++ b/sdk/objc/api/RTCVideoRendererAdapter.mm
@@ -9,9 +9,7 @@
  */
 
 #import "RTCVideoRendererAdapter+Private.h"
-#import "api/video_frame_buffer/RTCI420Buffer+Private.h"
 #import "base/RTCVideoFrame.h"
-#import "base/RTCVideoFrameBuffer.h"
 
 #include <memory>
 
diff --git a/sdk/objc/api/video_codec/RTCVideoCodecConstants.h b/sdk/objc/api/video_codec/RTCVideoCodecConstants.h
index 1d03f59..fb9043f 100644
--- a/sdk/objc/api/video_codec/RTCVideoCodecConstants.h
+++ b/sdk/objc/api/video_codec/RTCVideoCodecConstants.h
@@ -10,7 +10,7 @@
 
 #import <Foundation/Foundation.h>
 
-#import "base/RTCMacros.h"
+#import "RTCMacros.h"
 
 RTC_EXPORT extern NSString *const kRTCVideoCodecVp8Name;
 RTC_EXPORT extern NSString *const kRTCVideoCodecVp9Name;
diff --git a/sdk/objc/api/video_frame_buffer/RTCI420Buffer+Private.h b/sdk/objc/api/video_frame_buffer/RTCNativeI420Buffer+Private.h
similarity index 96%
rename from sdk/objc/api/video_frame_buffer/RTCI420Buffer+Private.h
rename to sdk/objc/api/video_frame_buffer/RTCNativeI420Buffer+Private.h
index 97bc141..fad08c2 100644
--- a/sdk/objc/api/video_frame_buffer/RTCI420Buffer+Private.h
+++ b/sdk/objc/api/video_frame_buffer/RTCNativeI420Buffer+Private.h
@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#import "RTCI420Buffer.h"
+#import "RTCNativeI420Buffer.h"
 
 #include "api/video/i420_buffer.h"
 
diff --git a/sdk/objc/api/video_frame_buffer/RTCI420Buffer.h b/sdk/objc/api/video_frame_buffer/RTCNativeI420Buffer.h
similarity index 83%
rename from sdk/objc/api/video_frame_buffer/RTCI420Buffer.h
rename to sdk/objc/api/video_frame_buffer/RTCNativeI420Buffer.h
index dc26134..4830952 100644
--- a/sdk/objc/api/video_frame_buffer/RTCI420Buffer.h
+++ b/sdk/objc/api/video_frame_buffer/RTCNativeI420Buffer.h
@@ -10,14 +10,14 @@
 
 #import <AVFoundation/AVFoundation.h>
 
-#import "base/RTCI420Buffer.h"
-#import "base/RTCMacros.h"
+#import "RTCI420Buffer.h"
+#import "RTCMacros.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
 /** RTCI420Buffer implements the RTCI420Buffer protocol */
 RTC_EXPORT
-@interface RTCI420Buffer : NSObject <RTCI420Buffer>
+@interface RTCI420Buffer : NSObject<RTCI420Buffer>
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/sdk/objc/api/video_frame_buffer/RTCI420Buffer.mm b/sdk/objc/api/video_frame_buffer/RTCNativeI420Buffer.mm
similarity index 98%
rename from sdk/objc/api/video_frame_buffer/RTCI420Buffer.mm
rename to sdk/objc/api/video_frame_buffer/RTCNativeI420Buffer.mm
index babd93c..d9d5d15 100644
--- a/sdk/objc/api/video_frame_buffer/RTCI420Buffer.mm
+++ b/sdk/objc/api/video_frame_buffer/RTCNativeI420Buffer.mm
@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#import "RTCI420Buffer+Private.h"
+#import "RTCNativeI420Buffer+Private.h"
 
 #include "api/video/i420_buffer.h"
 
diff --git a/sdk/objc/api/video_frame_buffer/RTCMutableI420Buffer.h b/sdk/objc/api/video_frame_buffer/RTCNativeMutableI420Buffer.h
similarity index 77%
rename from sdk/objc/api/video_frame_buffer/RTCMutableI420Buffer.h
rename to sdk/objc/api/video_frame_buffer/RTCNativeMutableI420Buffer.h
index aa91af2..035666d 100644
--- a/sdk/objc/api/video_frame_buffer/RTCMutableI420Buffer.h
+++ b/sdk/objc/api/video_frame_buffer/RTCNativeMutableI420Buffer.h
@@ -10,15 +10,15 @@
 
 #import <AVFoundation/AVFoundation.h>
 
-#import "RTCI420Buffer.h"
-#import "base/RTCMacros.h"
-#import "base/RTCMutableI420Buffer.h"
+#import "RTCMacros.h"
+#import "RTCMutableI420Buffer.h"
+#import "RTCNativeI420Buffer.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
 /** Mutable version of RTCI420Buffer */
 RTC_EXPORT
-@interface RTCMutableI420Buffer : RTCI420Buffer <RTCMutableI420Buffer>
+@interface RTCMutableI420Buffer : RTCI420Buffer<RTCMutableI420Buffer>
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/sdk/objc/api/video_frame_buffer/RTCMutableI420Buffer.mm b/sdk/objc/api/video_frame_buffer/RTCNativeMutableI420Buffer.mm
similarity index 91%
rename from sdk/objc/api/video_frame_buffer/RTCMutableI420Buffer.mm
rename to sdk/objc/api/video_frame_buffer/RTCNativeMutableI420Buffer.mm
index e326fac..5c6c1ff 100644
--- a/sdk/objc/api/video_frame_buffer/RTCMutableI420Buffer.mm
+++ b/sdk/objc/api/video_frame_buffer/RTCNativeMutableI420Buffer.mm
@@ -8,9 +8,9 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#import "RTCMutableI420Buffer.h"
+#import "RTCNativeMutableI420Buffer.h"
 
-#import "RTCI420Buffer+Private.h"
+#import "RTCNativeI420Buffer+Private.h"
 
 #include "api/video/i420_buffer.h"