GN: Add -Wl,-z defs on linux and fix errors

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 245 matching lines @@
       sources -= [ "renderer_host/pepper/pepper_truetype_font_list_pango.cc" ]
     }
   }
 
   if (is_linux && use_aura) {
     configs += [ "//build/config/linux:fontconfig" ]
   }
 
   if (use_x11) {
     configs += [ "//build/config/linux:x11" ]
+    deps += [ "//ui/gfx/x" ]
   }
 
   # Dealing with power_save_blocker_{x11,ozone}.cc is a little complicated
   # given the interaction between os_chromeos and the feature flags for X11 and
   # ozone, so do it all in one spot.
   if (is_chromeos || !use_ozone) {
     sources -= [ "power_save_blocker_ozone.cc" ]
   }
   if (is_chromeos || !use_x11) {
     sources -= [ "power_save_blocker_x11.cc" ]
@@ skipping 158 matching lines @@
       "media/cdm/browser_cdm_manager.h",
       "media/media_web_contents_observer.cc",
       "media/media_web_contents_observer.h",
     ]
   }
 
   if (is_linux && use_openssl) {
     deps += [ "//third_party/boringssl" ]
   }
 }