Add //content:browser dependency on //ppapi:host

content/browser/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//content/browser/browser.gni")
 import("//media/media_options.gni")
 
@@ skipping 248 matching lines @@
         "udev_linux.h",
       ]
     }
   }
 
   if (enable_plugins) {
     sources += rebase_path(content_browser_gypi_values.plugin_browser_sources,
                            ".",
                            "//content")
     deps += [
+      "//ppapi/host",
       "//ppapi/proxy:ipc",
       "//ppapi/shared_impl",
     ]
     if (!use_ozone || use_pango) {
       sources -= [ "renderer_host/pepper/pepper_truetype_font_list_ozone.cc" ]
     }
     if (!use_pango) {
       sources -= [ "renderer_host/pepper/pepper_truetype_font_list_pango.cc" ]
     }
   }
@@ skipping 193 matching lines @@
   }
 
   if (is_linux && use_openssl) {
     deps += [ "//third_party/boringssl" ]
   }
 
   if (enable_media_mojo_renderer) {
     deps += [ "//media/mojo/services:renderer_service" ]
   }
 }