Remove all uses of toolkit_use_gtk in the gyp files.

content/browser/browser_main_loop.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/browser_main_loop.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/file_util.h"
@@ skipping 164 matching lines @@
              strstr(log_domain, "Gtk")) {
     LOG(ERROR) << "GTK icon error: " << message;
   } else if (strstr(message, "Theme file for default has no") ||
              strstr(message, "Theme directory") ||
              strstr(message, "theme pixmap") ||
              strstr(message, "locate theme engine")) {
     LOG(ERROR) << "GTK theme error: " << message;
   } else if (strstr(message, "Unable to create Ubuntu Menu Proxy") &&
              strstr(log_domain, "<unknown>")) {
     LOG(ERROR) << "GTK menu proxy create failed";
-  } else if (strstr(message, "gtk_drag_dest_leave: assertion")) {
-    LOG(ERROR) << "Drag destination deleted: http://crbug.com/18557";
   } else if (strstr(message, "Out of memory") &&
              strstr(log_domain, "<unknown>")) {
     LOG(ERROR) << "DBus call timeout or out of memory: "
                << "http://crosbug.com/15496";
   } else if (strstr(message, "Could not connect: Connection refused") &&
              strstr(log_domain, "<unknown>")) {
     LOG(ERROR) << "DConf settings backend could not connect to session bus: "
                << "http://crbug.com/179797";
   } else if (strstr(message, "Attempting to store changes into") ||
              strstr(message, "Attempting to set the permissions of")) {
@@ skipping 891 matching lines @@
       base::TimeDelta::FromSeconds(delay_secs));
 }
 
 void BrowserMainLoop::EndStartupTracing(const base::FilePath& trace_file) {
   is_tracing_startup_ = false;
   TracingController::GetInstance()->DisableRecording(
       trace_file, base::Bind(&OnStoppedStartupTracing));
 }
 
 }  // namespace content