Enable jumbo for media/capture

Building //media takes around 23 CPU minutes. A experimental
branch showed that this could be reduced, by using jumbo,
to around 9 CPU minutes. media/capture is the fifth largest part
of media and takes around 2 CPU minutes to compile without
jumbo.

This commit enables jumbo for media/capture.

Bug: 867350
Change-Id: Ib53497ecde8a096b4436b4c60069e9e24e482a68
Reviewed-on: https://chromium-review.googlesource.com/1154922Reviewed-by: Chrome Cunningham (In Paris) <chcunningham@chromium.org>
Commit-Queue: Chrome Cunningham (In Paris) <chcunningham@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579745}

media/capture/BUILD.gn

@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
+import("//build/config/jumbo.gni")
 import("//media/media_options.gni")
 import("//testing/test.gni")
 
@@ -17,7 +18,7 @@ group("capture") {
 }
 
 # Things needed by //media/capture/mojom/video_capture_types.mojom.
-component("capture_base") {
+jumbo_component("capture_base") {
   defines = [ "CAPTURE_IMPLEMENTATION" ]
   sources = [
     "capture_export.h",
@@ -37,7 +38,7 @@ component("capture_base") {
 }
 
 # Target which allows breakout of Android BUILD.gn files.
-source_set("capture_device_specific") {
+jumbo_source_set("capture_device_specific") {
   visibility = [
     ":capture_lib",
     "//media/capture/content/android",
@@ -90,7 +91,7 @@ source_set("capture_device_specific") {
   ]
 }
 
-component("capture_lib") {
+jumbo_component("capture_lib") {
   defines = [ "CAPTURE_IMPLEMENTATION" ]
   sources = [
     "video/create_video_capture_device_factory.cc",