[subresource_filter] add //chrome level unit test harness

components/subresource_filter/content/browser/BUILD.gn

Index: components/subresource_filter/content/browser/BUILD.gn
diff --git a/components/subresource_filter/content/browser/BUILD.gn b/components/subresource_filter/content/browser/BUILD.gn
index bda66f0452927ebfb34693eb7a5e3962eb7618f9..79207006da3b91be137fff63e30eeb862d7ef97b 100644
--- a/components/subresource_filter/content/browser/BUILD.gn
+++ b/components/subresource_filter/content/browser/BUILD.gn
@@ -48,12 +48,17 @@ static_library("test_support") {
   sources = [
     "async_document_subresource_filter_test_utils.cc",
     "async_document_subresource_filter_test_utils.h",
+    "fake_safe_browsing_database_manager.cc",
+    "fake_safe_browsing_database_manager.h",
   ]
   deps = [
     ":browser",
     "//base/test:test_support",
+    "//components/safe_browsing_db:test_database_manager",

[engedy, 2017/04/20 12:34:33]

I'm not sure how strongly this is enforced, but someone complained on another CL
that the subresource filter's headers include a lot of other headers from other
components, but don't expose the source component as a public deps. This might
be problematic at least in theory because the dependent translation unit that
will indirectly include those headers will not inherit include directory
configs.

Consider moving this to public_deps (probably many other deps need to be moved,
but let's do that in another CL).

[Charlie Harrison, 2017/04/20 15:55:20]

Done.

     "//components/subresource_filter/core/common",
+    "//content/public/browser",
     "//testing/gtest:gtest",
+    "//url",
   ]
 }