Add jumbo_test template

We already support jumbo_source_set, jumbo_component and
jumbo_static_library so this is just another common template with a
non-default configuration.

This is needed in some form for jumbo in blink unittests.

Bug: 761475
Change-Id: I443fedb4a41c43cf21102e2a2f8ced937961665c
Reviewed-on: https://chromium-review.googlesource.com/671369
Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Commit-Queue: Daniel Bratell <bratell@opera.com>
Cr-Original-Commit-Position: refs/heads/master@{#503193}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 21f6df2a9bbb8c7bc60186c2ae1792b8361e1c5d

config/jumbo.gni

@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/split_static_library.gni")  # When someone uses that target_type
+import("//testing/test.gni")  # When someone uses the test target_type
 
 declare_args() {
   # If true, use a jumbo build (files compiled together) to speed up
@@ -198,8 +199,8 @@ template("jumbo_source_set") {
 }
 
 set_defaults("jumbo_source_set") {
-  # This sets the default list of configs when the content_source_set target
-  # is defined. The default_compiler_configs comes from BUILDCONFIG.gn and
+  # This sets the default list of configs when the source_set target
+  # is used. The default_compiler_configs comes from BUILDCONFIG.gn and
   # is the list normally applied to static libraries and source sets.
   configs = default_compiler_configs
 }
@@ -213,8 +214,8 @@ template("jumbo_static_library") {
 }
 
 set_defaults("jumbo_static_library") {
-  # This sets the default list of configs when the content_source_set target
-  # is defined. The default_compiler_configs comes from BUILDCONFIG.gn and
+  # This sets the default list of configs when the static_library target
+  # is used. The default_compiler_configs comes from BUILDCONFIG.gn and
   # is the list normally applied to static libraries and source sets.
   configs = default_compiler_configs
 }
@@ -228,8 +229,9 @@ template("jumbo_split_static_library") {
 }
 
 set_defaults("jumbo_split_static_library") {
-  # This sets the default list of configs when the content_source_set target
-  # is defined. The default_compiler_configs comes from BUILDCONFIG.gn and
+  # This sets the default list of configs when the
+  # split_static_library target is used.
+  # The default_compiler_configs comes from BUILDCONFIG.gn and
   # is the list normally applied to static libraries and source sets.
   configs = default_compiler_configs
 }
@@ -243,8 +245,8 @@ template("jumbo_component") {
 }
 
 set_defaults("jumbo_component") {
-  # This sets the default list of configs when the content_source_set
-  # target is defined. This code is a clone of set_defaults for the
+  # This sets the default list of configs when the component
+  # target is used. This code is a clone of set_defaults for the
   # ordinary "component" template.
   if (is_component_build) {
     configs = default_shared_library_configs
@@ -255,3 +257,24 @@ set_defaults("jumbo_component") {
     configs = default_compiler_configs
   }
 }
+
+# See documentation above by "internal_jumbo_target".
+template("jumbo_test") {
+  internal_jumbo_target(target_name) {
+    target_type = "test"
+    forward_variables_from(invoker, "*")
+  }
+}
+
+set_defaults("jumbo_test") {
+  # This sets the default list of configs when the test target is
+  # used. This code is a clone of set_defaults for the ordinary
+  # "test" template.
+  if (is_android) {
+    configs = default_shared_library_configs
+    configs -= [ "//build/config/android:hide_all_but_jni_onload" ]
+    configs += [ "//build/config/android:hide_all_but_jni" ]
+  } else {
+    configs = default_executable_configs
+  }
+}