Remove all uses of toolkit_use_gtk in the gyp files.

tools/gtk_clipboard_dump/gtk_clipboard_dump.cc

-// Copyright (c) 2006-2008 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 <gtk/gtk.h>
-#include <stdio.h>
-#include <string.h>
-#include <string>
-
-namespace {
-
-void PrintClipboardContents(GtkClipboard* clip) {
-  GdkAtom* targets;
-  int num_targets = 0;
-
-  // This call is bugged, the cache it checks is often stale; see
-  // <http://bugzilla.gnome.org/show_bug.cgi?id=557315>.
-  // gtk_clipboard_wait_for_targets(clip, &targets, &num_targets);
-
-  GtkSelectionData* target_data =
-      gtk_clipboard_wait_for_contents(clip,
-                                      gdk_atom_intern("TARGETS", false));
-  if (!target_data) {
-    printf("failed to get the contents!\n");
-    return;
-  }
-
-  gtk_selection_data_get_targets(target_data, &targets, &num_targets);
-
-  printf("%d available targets:\n---------------\n", num_targets);
-
-  for (int i = 0; i < num_targets; i++) {
-    gchar* target_name_cstr = gdk_atom_name(targets[i]);
-    std::string target_name(target_name_cstr);
-    g_free(target_name_cstr);
-    printf("  [format: %s", target_name.c_str());
-    GtkSelectionData* data = gtk_clipboard_wait_for_contents(clip, targets[i]);
-    if (!data) {
-      printf("]: NULL\n\n");
-      continue;
-    }
-
-    printf(" / length: %d / bits %d]: ", data->length, data->format);
-
-    if (strstr(target_name.c_str(), "image")) {
-      printf("(image omitted)\n\n");
-    } else if (strstr(target_name.c_str(), "TIMESTAMP")) {
-      // TODO(estade): Print the time stamp in human readable format.
-      printf("(time omitted)\n\n");
-    } else {
-      for (int j = 0; j < data->length; j++) {
-        // Output data one byte at a time. Currently wide strings look
-        // pretty weird.
-        printf("%c", (data->data[j] == 0 ? '_' : data->data[j]));
-      }
-      printf("\n\n");
-    }
-    gtk_selection_data_free(data);
-  }
-
-  if (num_targets <= 0) {
-    printf("No targets advertised. Text is: ");
-    gchar* text = gtk_clipboard_wait_for_text(clip);
-    printf("%s\n", text ? text : "NULL");
-    g_free(text);
-  }
-
-  g_free(targets);
-  gtk_selection_data_free(target_data);
-}
-
-}
-
-/* Small program to dump the contents of GTK's clipboards to the terminal.
- * Feel free to add to it or improve formatting or whatnot.
- */
-int main(int argc, char* argv[]) {
-  gtk_init(&argc, &argv);
-
-  printf("Desktop clipboard\n");
-  PrintClipboardContents(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD));
-
-  printf("X clipboard\n");
-  PrintClipboardContents(gtk_clipboard_get(GDK_SELECTION_PRIMARY));
-}