media: Move widevine CDM targets to WidevineCdm folder

chrome/BUILD.gn

Index: chrome/BUILD.gn
diff --git a/chrome/BUILD.gn b/chrome/BUILD.gn
index f4860f9e0cf140cb519203433a4c7b2e6d4179c0..0400fc7fdd67a9bbb49b21fbbb15e6be9a6dd9f9 100644
--- a/chrome/BUILD.gn
+++ b/chrome/BUILD.gn
@@ -222,9 +222,10 @@ if (!is_android && !is_mac) {
       # On Mac, internal plugins go inside the framework, so these
       # dependencies are on chrome.dll.
       "//third_party/adobe/flash:flapper_binaries",
-      "//third_party/widevine/cdm:widevinecdmadapter",
     ]
 
+    data_deps += [ "//third_party/widevine/cdm:widevinecdmadapter" ]
+
     if (is_multi_dll_chrome) {
       defines += [ "CHROME_MULTIPLE_DLL" ]
       data_deps += [ ":chrome_child" ]