[Blimp] Refactor Blimp test engine with embedded test server and URL rewriting

blimp/engine/BUILD.gn

Index: blimp/engine/BUILD.gn
diff --git a/blimp/engine/BUILD.gn b/blimp/engine/BUILD.gn
index c15176bc114733357ce5caea1544db94064bd52d..24556c6003733b712b1f0ad5b4128ba4966afc4f 100644
--- a/blimp/engine/BUILD.gn
+++ b/blimp/engine/BUILD.gn
@@ -467,6 +467,44 @@ source_set("test_support") {
   ]
 }
 
+source_set("testing_app") {
+  testonly = true
+
+  sources = [
+    "testing/app/blimp_browser_testing_main_parts.cc",
+    "testing/app/blimp_browser_testing_main_parts.h",
+    "testing/app/blimp_content_browser_client_for_test.cc",
+    "testing/app/blimp_content_browser_client_for_test.h",
+    "testing/app/blimp_content_main_delegate_for_test.cc",
+    "testing/app/blimp_content_main_delegate_for_test.h",
+    "testing/app/blimp_url_rewriter.cc",
+    "testing/app/blimp_url_rewriter.h",
+    "testing/app/content_testing_main.cc",
+    "testing/app/content_testing_main.h",
+    "testing/session/blimp_engine_testing_session.cc",
+    "testing/session/blimp_engine_testing_session.h",
+  ]
+
+  deps = [
+    ":app",
+    ":app_config",
+    ":feature",
+    ":pak",
+    ":session",
+    ":test_support",
+    "//base",
+    "//blimp/engine:blob_channel_mojo_cpp_sources",
+    "//blimp/net",
+    "//content/public/app:both",
+    "//content/public/browser",
+    "//content/public/common",
+    "//content/public/common:service_names",
+    "//content/test:test_support",
+    "//net:test_support",
+    "//testing/gtest",
+  ]
+}
+
 source_set("app_unit_tests") {
   testonly = true
 
@@ -503,6 +541,29 @@ source_set("app_unit_tests") {
   ]
 }
 
+source_set("testing_app_unit_tests") {
+  testonly = true
+
+  sources = [
+    "testing/app/blimp_url_rewriter_unittest.cc",
+  ]
+
+  deps = [
+    ":app",
+    ":feature",
+    ":session",
+    ":test_support",
+    ":testing_app",
+    "//base",
+    "//content/public/app:both",
+    "//content/public/browser",
+    "//content/test:browsertest_support",
+    "//content/test:test_support",
+    "//net:test_support",
+    "//testing/gtest",
+  ]
+}
+
 source_set("common_unit_tests") {
   testonly = true
 
@@ -610,6 +671,7 @@ source_set("unit_tests") {
     ":font_data_fetcher_unit_tests",
     ":mojo_unit_tests",
     ":renderer_unit_tests",
+    ":testing_app_unit_tests",
   ]
 }
 
@@ -617,6 +679,44 @@ if (is_linux) {
   _runtime_deps = "$root_gen_dir/blimp-engine.runtime_deps"
   _rebased_runtime_deps = rebase_path(_runtime_deps, root_out_dir)
 
+  executable("blimp_engine_testing_app") {
+    testonly = true
+
+    sources = [
+      "testing/app/blimp_testing_main.cc",
+    ]
+
+    deps = [
+      ":app",
+      ":app_config",
+      ":pak",
+      ":session",
+      ":testing_app",
+      "//base",
+      "//blimp/net",
+      "//content/public/app:both",
+      "//content/public/browser",
+      "//content/public/common",
+      "//content/test:test_support",
+      "//net:test_support",
+    ]
+
+    data_deps = [
+      ":pak",
+      "//sandbox/linux:chrome_sandbox",
+      "//third_party/blimp_fonts",
+    ]
+
+    configs += [ "//content:content_implementation" ]
+  }
+
+  group("engine_for_test") {
+    testonly = true
+    public_deps = [
+      ":blimp_engine_testing_app",
+    ]
+  }
+
   executable("blimp_engine_app") {
     sources = [
       "app/blimp_main.cc",