Revert of Add more components tests to GN build.

components/web_cache/browser/BUILD.gn

Index: components/web_cache/browser/BUILD.gn
diff --git a/components/web_cache/browser/BUILD.gn b/components/web_cache/browser/BUILD.gn
index e64a2d5ca4aed9bd06c36848a3898dbe61f07033..e1d24d64399107638170899f2f214053d9e2983d 100644
--- a/components/web_cache/browser/BUILD.gn
+++ b/components/web_cache/browser/BUILD.gn
@@ -2,7 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("browser") {
+static_library("browser") {
+  output_name = "web_cache_browser"
   sources = [
     "web_cache_manager.cc",
     "web_cache_manager.h",
@@ -18,16 +19,3 @@
     "//third_party/WebKit/public:blink",
   ]
 }
-
-source_set("unit_tests") {
-  testonly = true
-  sources = [
-    "web_cache_manager_unittest.cc",
-  ]
-  deps = [
-    ":browser",
-    "//base",
-    "//content/test:test_support",
-    "//testing/gtest",
-  ]
-}