Make more of content pass "gn check"

content/browser/BUILD.gn

Index: content/browser/BUILD.gn
diff --git a/content/browser/BUILD.gn b/content/browser/BUILD.gn
index 3547ea6cde14b7d480f44ce5ec86f549bd8decb0..48ba0e191a88e5353542109bee8fc241833cb743 100644
--- a/content/browser/BUILD.gn
+++ b/content/browser/BUILD.gn
@@ -27,6 +27,7 @@ source_set("browser") {
   deps = [
     "//base",
     "//base:base_static",
+    "//base/third_party/dynamic_annotations",
     "//cc",
     "//cc/surfaces",
     "//components/filesystem:lib",
@@ -34,6 +35,8 @@ source_set("browser") {
     "//components/mime_util",
     "//components/profile_service:lib",
     "//components/scheduler:common",
+    "//components/tracing",
+    "//components/tracing:startup_tracing",
     "//components/url_formatter",
     "//content:resources",
     "//content/app/resources",
@@ -55,9 +58,15 @@ source_set("browser") {
     "//device/vibration",
     "//gin",
     "//google_apis",
+    "//gpu",
+    "//gpu/command_buffer/client:gles2_implementation",
+    "//ipc/mojo",
+    "//media",
+    "//media/midi",
     "//mojo/common",
     "//mojo/common:url_type_converters",
     "//mojo/converters/geometry",
+    "//mojo/converters/network",
     "//mojo/public/cpp/bindings",
     "//mojo/public/js",
     "//mojo/shell",
@@ -87,6 +96,9 @@ source_set("browser") {
     "//third_party/libyuv",
     "//third_party/npapi",
     "//third_party/re2",
+    "//third_party/webrtc",
+    "//third_party/webrtc/base:rtc_base",
+    "//third_party/webrtc/modules/desktop_capture:primitives",
     "//third_party/zlib",
     "//third_party/zlib:zip",
     "//ui/accessibility",
@@ -101,6 +113,7 @@ source_set("browser") {
     "//ui/gl",
     "//ui/native_theme",
     "//ui/resources",
+    "//ui/shell_dialogs",
     "//ui/snapshot",
     "//ui/surface",
     "//ui/touch_selection",