Fix proper deps in BUILD.gn files.

This should make Chrome GN bots happy.

R=kjellander@webrtc.org
TBR=kjellander@webrtc.org
BUG=3768, 3770

Review URL: https://webrtc-codereview.appspot.com/31389004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7219 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/video_capture/BUILD.gn

@@ -47,6 +47,7 @@ source_set("video_capture_impl") {
 
   deps = [
     ":video_capture",
+    "../../system_wrappers",
   ]
 
   if (is_clang) {
@@ -69,6 +70,7 @@ config("video_capture_internal_impl_config") {
 source_set("video_capture_internal_impl") {
   deps = [
     ":video_capture",
+    "../../system_wrappers",
   ]
 
   if (is_linux) {

webrtc/modules/video_render/BUILD.gn

@@ -41,6 +41,7 @@ source_set("video_render_impl") {
   ]
   deps = [
     ":video_render",
+    "../../system_wrappers",
   ]
 
   if (is_clang) {
@@ -64,6 +65,10 @@ source_set("video_render_internal_impl") {
   sources = [
     "video_render_internal_impl.cc",
   ]
+  deps = [
+    ":video_render",
+    "../../system_wrappers",
+  ]
 
   if (is_linux) {
     sources += [