Remove third_party/npapi

content/DEPS

 # Do NOT add chrome to the list below. We shouldn't be including files
 # from src/chrome in src/content. Also, we may only depend on files in
 # src/components that are shared with the mojo html_viewer.
 include_rules = [
   # The subdirectories in content/ will manually allow their own include
   # directories in content/ so we disallow all of them.
   "-content",
   "+content/app/resources/grit/content_resources.h",
   "+content/common",
   "+content/grit",
@@ skipping 42 matching lines @@
 
   # Don't allow inclusion of these other libs we shouldn't be calling directly.
   "-v8",
   "-tools",
 
   # Allow inclusion of third-party code:
   "+third_party/angle",
   "+third_party/flac",
   "+third_party/libjingle",
   "+third_party/mozilla",
-  "+third_party/npapi/bindings",
   "+third_party/ocmock",
   "+third_party/re2",
   "+third_party/skia",
   "+third_party/sqlite",
   "+third_party/khronos",
   "+third_party/webrtc",
   "+third_party/zlib/google",
   "+third_party/WebKit/public/platform",
   "+third_party/WebKit/public/web",
 
@@ skipping 40 matching lines @@
 ]
 
 # content -> content/shell dependency is not allowed, except for browser tests.
 specific_include_rules = {
   ".*_browsertest[a-z_]*\.cc": [
     "+content/shell/browser",
     "+content/shell/common",
   ],
 }