Make WebView work for external displays (over Presentations).

ui/gfx/BUILD.gn

Index: ui/gfx/BUILD.gn
diff --git a/ui/gfx/BUILD.gn b/ui/gfx/BUILD.gn
index 1cec94eaf3e36152ca1b7737b0900a42175cf87a..cb90adb17e1069d939f66efcaff9a0e359728abd 100644
--- a/ui/gfx/BUILD.gn
+++ b/ui/gfx/BUILD.gn
@@ -31,8 +31,6 @@ component("gfx") {
     "android/gfx_jni_registrar.h",
     "android/java_bitmap.cc",
     "android/java_bitmap.h",
-    "android/shared_device_display_info.cc",
-    "android/shared_device_display_info.h",
     "android/view_configuration.cc",
     "android/view_configuration.h",
     "animation/animation.cc",
@@ -177,7 +175,6 @@ component("gfx") {
     "scoped_ui_graphics_push_context_ios.mm",
     "screen.cc",
     "screen.h",
-    "screen_android.cc",
     "screen_aura.cc",
     "screen_ios.mm",
     "screen_mac.mm",
@@ -293,10 +290,7 @@ component("gfx") {
   # Android.
   if (is_android) {
     if (use_aura) {
-      sources -= [
-        "canvas_notimplemented.cc",
-        "screen_android.cc",
-      ]
+      sources -= [ "canvas_notimplemented.cc" ]
       sources += [ "font_fallback_android.cc" ]
     } else {
       sources -= [