Multiprocess test client: Android child process launcher rework.

android_webview/test/BUILD.gn

Index: android_webview/test/BUILD.gn
diff --git a/android_webview/test/BUILD.gn b/android_webview/test/BUILD.gn
index 5e82e2b3d86ec5cd2e950899d485a68630a963fe..cfdbd247dd63a33c97f1e946ab4758f83cad2283 100644
--- a/android_webview/test/BUILD.gn
+++ b/android_webview/test/BUILD.gn
@@ -264,7 +264,6 @@ android_library("android_webview_unittests_java") {
   deps = [
     "//android_webview:android_webview_java",
     "//base:base_java",
-    "//base:base_java_test_support",

[boliu, 2016/12/15 01:43:02]

this change seems totally unrelated to this CL? pull it out into a separate one?

[Jay Civelli, 2016/12/16 16:59:52]

It is somehow related. I changed testing/test.gni to add base_java_test_support
to the deps of all test target on Android.
As a result I looked for all occurrences of it and removed it where it was not
needed.

[boliu, 2016/12/16 17:13:41]

Sure.. lgtm

     "//content/public/test/android:content_java_test_support",
   ]
   java_files = [