[Remoting Client] DesktopViewport Implementation

remoting/client/BUILD.gn

Index: remoting/client/BUILD.gn
diff --git a/remoting/client/BUILD.gn b/remoting/client/BUILD.gn
index 4ad8bb3c2ab297129cd32bf8ab017c5b570c02bc..f56399db4879fb13ba52e4c522061ba7f90bb725 100644
--- a/remoting/client/BUILD.gn
+++ b/remoting/client/BUILD.gn
@@ -24,6 +24,8 @@ static_library("client") {
     "connect_to_host_info.h",
     "cursor_shape_stub_proxy.cc",
     "cursor_shape_stub_proxy.h",
+    "desktop_viewport.cc",
+    "desktop_viewport.h",
     "dual_buffer_frame_consumer.cc",
     "dual_buffer_frame_consumer.h",
     "empty_cursor_filter.cc",
@@ -44,10 +46,14 @@ static_library("client") {
     "queued_task_poster.h",
     "server_log_entry_client.cc",
     "server_log_entry_client.h",
+    "simple_matrix.cc",
+    "simple_matrix.h",
     "software_video_renderer.cc",
     "software_video_renderer.h",
     "touch_input_scaler.cc",
     "touch_input_scaler.h",
+    "viewport_geometry.cc",
+    "viewport_geometry.h",
   ]
   set_sources_assignment_filter(sources_assignment_filter)
 
@@ -103,6 +109,7 @@ source_set("unit_tests") {
     "audio_player_unittest.cc",
     "chromoting_client_runtime_unittest.cc",
     "client_telemetry_logger_unittest.cc",
+    "desktop_viewport_unittest.cc",
     "dual_buffer_frame_consumer_unittest.cc",
     "empty_cursor_filter_unittest.cc",
     "key_event_mapper_unittest.cc",