GN: Implement video_engine, video_capture and video_render.

Also add more from common.gypi to webrtc.gni.

These GN configs are based on GYP files in r6997.

BUG=3441
TEST=Trybots and local compile using:
gn gen out/Default --args="build_with_chromium=false" && ninja -C out/Default
gn gen out/Default --args="build_with_chromium=false is_debug=true" && ninja -C out/Default

Passed compile from a Chromium checkout with src/third_party/webrtc linked to the webrtc/ dir of a checkout with this patch applied.

R=brettw@chromium.org, glaznev@webrtc.org, mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/18709004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6999 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/video/BUILD.gn

diff --git a/webrtc/video/BUILD.gn b/webrtc/video/BUILD.gn
index 18c43f9..121e754 100644
--- a/webrtc/video/BUILD.gn
+++ b/webrtc/video/BUILD.gn
@@ -9,6 +9,28 @@
 import("../build/webrtc.gni")
 
 source_set("video") {
-  # TODO(pbos): Implement when video_engine_core is done.
+  sources = [
+    "call.cc",
+    "encoded_frame_callback_adapter.cc",
+    "encoded_frame_callback_adapter.h",
+    "receive_statistics_proxy.cc",
+    "receive_statistics_proxy.h",
+    "send_statistics_proxy.cc",
+    "send_statistics_proxy.h",
+    "transport_adapter.cc",
+    "transport_adapter.h",
+    "video_receive_stream.cc",
+    "video_receive_stream.h",
+    "video_send_stream.cc",
+    "video_send_stream.h",
+  ]
+
+  if (is_clang) {
+    # Suppress warnings from Chrome's Clang plugins.
+    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
+    configs -= [ "//build/config/clang:find_bad_constructs" ]
+  }
+
+  deps = [ "../video_engine:video_engine_core" ]
 }