Add DesktopFrame rotation functions

webrtc/modules/desktop_capture/BUILD.gn

 # Copyright (c) 2014 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("//build/config/ui.gni")
 import("../../build/webrtc.gni")
 
 use_desktop_capture_differ_sse2 =
     !is_ios && (current_cpu == "x86" || current_cpu == "x64")
 
 rtc_static_library("primitives") {
   sources = [
     "desktop_capture_types.h",
     "desktop_frame.cc",
     "desktop_frame.h",
     "desktop_geometry.cc",
     "desktop_geometry.h",
     "desktop_region.cc",
     "desktop_region.h",
+    "rgba_color.cc",
+    "rgba_color.h",
     "shared_desktop_frame.cc",
     "shared_desktop_frame.h",
   ]
 
   deps = [
     "../../base:rtc_base",  # TODO(kjellander): Cleanup in bugs.webrtc.org/3806.
   ]
 }
 
 if (rtc_include_tests) {
-  source_set("rgba_color") {
-    testonly = true
-
-    public_deps = [
-      ":desktop_capture",
-    ]
-
-    sources = [
-      "rgba_color.cc",
-      "rgba_color.h",
-    ]
-  }
-
   source_set("screen_drawer") {
     testonly = true
 
     public_deps = [
-      ":rgba_color",
+      ":primitives",
     ]
 
     sources = [
       "screen_drawer.cc",
       "screen_drawer.h",
       "screen_drawer_linux.cc",
       "screen_drawer_mac.cc",
       "screen_drawer_win.cc",
     ]
   }
 
   source_set("desktop_capture_mock") {
     testonly = true
 
     public_deps = [
       ":desktop_capture",
-      ":rgba_color",
+      ":primitives",
       "//testing/gmock",
     ]
 
     sources = [
       "desktop_frame_generator.cc",
       "desktop_frame_generator.h",
       "fake_desktop_capturer.cc",
       "fake_desktop_capturer.h",
       "mock_desktop_capturer_callback.cc",
       "mock_desktop_capturer_callback.h",
       "screen_capturer_mock_objects.h",
     ]
   }
 }
 
 rtc_static_library("desktop_capture") {
   sources = [
     "cropped_desktop_frame.cc",
     "cropped_desktop_frame.h",
     "cropping_window_capturer.cc",
     "cropping_window_capturer.h",
     "cropping_window_capturer_win.cc",
     "desktop_and_cursor_composer.cc",
     "desktop_and_cursor_composer.h",
     "desktop_capture_options.cc",
     "desktop_capture_options.h",
     "desktop_capturer.cc",
     "desktop_capturer.h",
+    "desktop_frame_rotator.cc",
+    "desktop_frame_rotator.h",
     "desktop_frame_win.cc",
     "desktop_frame_win.h",
     "mac/desktop_configuration.h",
     "mac/desktop_configuration.mm",
     "mac/desktop_configuration_monitor.cc",
     "mac/desktop_configuration_monitor.h",
     "mac/full_screen_chrome_window_detector.cc",
     "mac/full_screen_chrome_window_detector.h",
     "mac/scoped_pixel_buffer_object.cc",
     "mac/scoped_pixel_buffer_object.h",
@@ skipping 112 matching lines @@
     sources = [
       "differ_vector_sse2.cc",
       "differ_vector_sse2.h",
     ]
 
     if (is_posix) {
       cflags = [ "-msse2" ]
     }
   }
 }