Reformat all gn files in /content/browser.

`gn format` recently changed its formatting behavior
for deps, source, and a few other elements when they
are assigned (with =) single-element lists to be consistent
with the formatting of updates (with +=) with single-element.

Now that we've rolled in a GN binary with the change,
reformat all files so that people don't get presubmit
warnings due to this.

This CL was uploaded by git cl split.

R=boliu@chromium.org

Bug: 1041419
Change-Id: Ied9d082ee57276d5b82983e6b42ee7914dea9eff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1998672
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Bo <boliu@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732255}

content/browser/process_internals/BUILD.gn

@@ -5,11 +5,7 @@
 import("//mojo/public/tools/bindings/mojom.gni")
 
 mojom("mojo_bindings") {
-  sources = [
-    "process_internals.mojom",
-  ]
+  sources = [ "process_internals.mojom" ]
 
-  deps = [
-    "//url/mojom:url_mojom_gurl",
-  ]
+  deps = [ "//url/mojom:url_mojom_gurl" ]
 }