Remove third_party/libjingle and update GN targets.

content/renderer/DEPS

 include_rules = [
   # Allow inclusion of specific components that we depend on.
   # See comment in content/DEPS for which components are allowed.
   "+components/discardable_memory/client",
   "+components/payments",
   "+components/scheduler",
   "+components/url_formatter",
 
   "+cc/blink",
   "+content/public/child",
   "+content/public/renderer",
   "+content/child",
   "+device/battery",  # For battery status service.
   "+device/base/synchronization",
   "+device/gamepad/public/interfaces",
   "+device/screen_orientation/public/interfaces",
   "+device/sensors/public",
   "+device/usb/public",
   "+device/vibration",
   "+gin",
   "+jingle/glue",
   "+mojo",
   "+services",
   "-storage/browser",
   "+third_party/hyphen/hyphen.h",
-  "+third_party/libjingle",
+  "+third_party/webrtc_overrides",
   "+v8/include",
   "+v8/src/third_party/vtune",
 ]
 
 specific_include_rules = {
   '.*_[a-z]*browsertest.*': [
     "+content/public/browser",
     "+content/shell",
   ],
   "render_thread_impl_browsertest\.cc": [
     "+content/app/mojo/mojo_init.h",
   ],
   "render_thread_impl_discardable_memory_browsertest\.cc": [
     "+components/discardable_memory/service",
     "+content/browser/browser_main_loop.h",
   ],
 }