Run gn format on all BUILD.gn files (gn version 306668)

mojo/android/BUILD.gn

Index: mojo/android/BUILD.gn
diff --git a/mojo/android/BUILD.gn b/mojo/android/BUILD.gn
index e2b29a4ca69a2ffbf68a2ec5d37c707704d95c38..e1bd2f02317b812a5683dbcc3396d648f341aeb3 100644
--- a/mojo/android/BUILD.gn
+++ b/mojo/android/BUILD.gn
@@ -20,7 +20,9 @@ generate_jni("jni_headers") {
     "../../services/native_viewport/android/src/org/chromium/mojo/PlatformViewportAndroid.java",
     "../shell/android/apk/src/org/chromium/mojo_shell_apk/MojoMain.java",
   ]
-  deps = [ ":system_java_jni_headers" ]
+  deps = [
+    ":system_java_jni_headers",
+  ]
 
   jni_package = "mojo"
 }
@@ -123,7 +125,6 @@ shared_library("mojo_java_unittests") {
     "//mojo/public/cpp/environment",
   ]
   defines = [ "UNIT_TEST" ]
-
 }
 
 android_apk("mojo_test_apk") {