Format gn files in //content

Apply gn format to all *.gn and *.gni files in above directory.

This version of gn now automatically sorts all lists with variable
names ending in the suffix "sources" or "deps".

Bug: 1033668
Change-Id: Iac082f37ea3fde3753edbcadd00f7ac17d22fb93
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1970538
Reviewed-by: Brandon Wylie <wylieb@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#725318}

content/app/BUILD.gn

@@ -28,11 +28,11 @@ template("implement_content_app") {
     "//content/public/common:common_sources",
     "//content/public/common:service_names",
     "//crypto",
+    "//mojo/core/embedder",
+    "//ppapi/buildflags",
     "//services/service_manager/embedder",
     "//services/service_manager/public/mojom",
     "//services/tracing/public/cpp",
-    "//mojo/core/embedder",
-    "//ppapi/buildflags",
     "//ui/base",
     "//ui/gfx",
     "//ui/gfx/geometry",

content/public/android/BUILD.gn

@@ -96,13 +96,13 @@ android_library("content_java") {
 
   srcjar_deps = [
     ":common_aidl",
-    ":generate_sandboxed_service_srcjar",
-    ":is_ready_to_pay_service_aidl",
     ":content_public_android_java_enums_srcjar",
     ":content_public_android_java_switches_srcjar",
+    ":generate_sandboxed_service_srcjar",
+    ":is_ready_to_pay_service_aidl",
     "//content/browser/accessibility:content_browser_accessibility_java_enums_srcjar",
-    "//ui/touch_selection:ui_touch_selection_enums_srcjar",
     "//ui/touch_selection:ui_touch_handle_orientation_srcjar",
+    "//ui/touch_selection:ui_touch_selection_enums_srcjar",
   ]
 
   java_files = [