GN: Make content and content_shell work when !enable_plugins

content/renderer/BUILD.gn

Index: content/renderer/BUILD.gn
diff --git a/content/renderer/BUILD.gn b/content/renderer/BUILD.gn
index 1f0e307748f1f1423b1495ed3e00b3c1e5afc80c..eaad7f2c6874f703ebc38016380ee5f44cb79ad3 100644
--- a/content/renderer/BUILD.gn
+++ b/content/renderer/BUILD.gn
@@ -164,6 +164,16 @@ source_set("renderer") {
         ".", "//content")
   }
 
+  if (!enable_pepper_cdms) {
+    sources -= [
+      "media/crypto/pepper_cdm_wrapper.h",
+      "media/crypto/pepper_cdm_wrapper_impl.cc",
+      "media/crypto/pepper_cdm_wrapper_impl.h",
+      "media/crypto/ppapi_decryptor.cc",
+      "media/crypto/ppapi_decryptor.h",
+    ]
+  }
+
   if (printing_mode == 1) {
     deps += [ "//printing" ]
   }