[Ozone] Fix multiple definition of GpuMemoryBufferFactory::Create()

content/common/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/features.gni")
 import("//build/config/ui.gni")
 import("//content/common/common.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 
 if (is_chromeos && use_x11 && cpu_arch != "arm") {
@@ skipping 137 matching lines @@
     sources -= [ "user_agent.cc" ]
     assert(false, "Need to add lots of conditions here")
   }
 
   if (!use_ozone) {
     sources -= [
       "cursors/webcursor_ozone.cc",
       "font_list_ozone.cc",
       "gpu/gpu_memory_buffer_factory_ozone.cc",
     ]
+  } else {
+    sources -= [
+      "gpu/gpu_memory_buffer_factory_linux.cc",
+    ]
   }
 
   if (!use_aura) {
     sources -= [ "cursors/webcursor_aura.cc" ]
   }
 
   if (!use_aura || !use_x11) {
     sources -= [ "cursors/webcursor_aurax11.cc" ]
   }
 
@@ skipping 145 matching lines @@
   sources = [
     "geolocation_service.mojom",
     "render_frame_setup.mojom",
   ]
 
   deps = [
     "//content/public/common:mojo_bindings",
     "//mojo/public/interfaces/application:application",
   ]
 }