Move webCacheManager to //components.

components/web_cache/renderer/BUILD.gn

Index: components/web_cache/renderer/BUILD.gn
diff --git a/components/plugins/renderer/BUILD.gn b/components/web_cache/renderer/BUILD.gn
similarity index 48%
copy from components/plugins/renderer/BUILD.gn
copy to components/web_cache/renderer/BUILD.gn
index c4e2ee3682247ad8dc061105996336c5ceee84e1..69051fe4361525a6c832b4c3b7016f7064af9f10 100644
--- a/components/plugins/renderer/BUILD.gn
+++ b/components/web_cache/renderer/BUILD.gn
@@ -3,24 +3,14 @@
 # found in the LICENSE file.
 
 static_library("renderer") {
+  output_name = "web_cache_renderer"
   sources = [
-    "plugin_placeholder.cc",
-    "plugin_placeholder.h",
-    "webview_plugin.cc",
-    "webview_plugin.h",
+    "web_cache_render_process_observer.cc",
+    "web_cache_render_process_observer.h",
   ]
-  if (is_android) {
-    sources += [
-      "mobile_youtube_plugin.cc",
-      "mobile_youtube_plugin.h",
-    ]
-  }
 
   deps = [
-    "//gin",
-    "//skia",
+    "//content/public/renderer",
     "//third_party/WebKit/public:blink",
-    "//third_party/re2",
-    "//v8",
   ]
 }