Revert of Unify the macOS and iOS capturer implementations

webrtc/modules/video_capture/video_capture.gypi

Index: webrtc/modules/video_capture/video_capture.gypi
diff --git a/webrtc/modules/video_capture/video_capture.gypi b/webrtc/modules/video_capture/video_capture.gypi
index c66212fa2aa42c28452be1428862c3e5e58194fa..a2b2f58c9f266d34148ba67e42630ed32582695d 100644
--- a/webrtc/modules/video_capture/video_capture.gypi
+++ b/webrtc/modules/video_capture/video_capture.gypi
@@ -68,6 +68,29 @@
                 'linux/video_capture_linux.h',
               ],
             }],  # linux
+            ['OS=="mac"', {
+              'sources': [
+                'mac/qtkit/video_capture_qtkit.h',
+                'mac/qtkit/video_capture_qtkit.mm',
+                'mac/qtkit/video_capture_qtkit_info.h',
+                'mac/qtkit/video_capture_qtkit_info.mm',
+                'mac/qtkit/video_capture_qtkit_info_objc.h',
+                'mac/qtkit/video_capture_qtkit_info_objc.mm',
+                'mac/qtkit/video_capture_qtkit_objc.h',
+                'mac/qtkit/video_capture_qtkit_objc.mm',
+                'mac/qtkit/video_capture_qtkit_utility.h',
+                'mac/video_capture_mac.mm',
+              ],
+              'link_settings': {
+                'xcode_settings': {
+                  'OTHER_LDFLAGS': [
+                    '-framework Cocoa',
+                    '-framework CoreVideo',
+                    '-framework QTKit',
+                  ],
+                },
+              },
+            }],  # mac
             ['OS=="win"', {
               'dependencies': [
                 '<(DEPTH)/third_party/winsdk_samples/winsdk_samples.gyp:directshow_baseclasses',
@@ -110,16 +133,16 @@
                 },
               },
             }],
-            ['OS=="ios" or OS=="mac"', {
-              'sources': [
-                'apple/device_info.h',
-                'apple/device_info.mm',
-                'apple/device_info_objc.h',
-                'apple/device_info_objc.mm',
-                'apple/rtc_video_capture_objc.h',
-                'apple/rtc_video_capture_objc.mm',
-                'apple/video_capture.h',
-                'apple/video_capture.mm',
+            ['OS=="ios"', {
+              'sources': [
+                'ios/device_info_ios.h',
+                'ios/device_info_ios.mm',
+                'ios/device_info_ios_objc.h',
+                'ios/device_info_ios_objc.mm',
+                'ios/rtc_video_capture_ios_objc.h',
+                'ios/rtc_video_capture_ios_objc.mm',
+                'ios/video_capture_ios.h',
+                'ios/video_capture_ios.mm',
               ],
               'xcode_settings': {
                 'CLANG_ENABLE_OBJC_ARC': 'YES',
@@ -130,14 +153,6 @@
                     '-framework AVFoundation',
                     '-framework CoreMedia',
                     '-framework CoreVideo',
-                  ],
-                },
-              },
-            }],  # ios
-            ['OS=="ios"', {
-              'all_dependent_settings': {
-                'xcode_settings': {
-                  'OTHER_LDFLAGS': [
                     '-framework UIKit',
                   ],
                 },