Remove a bunch of TOOLKIT_GTK in content/ and gpu/, as well as NPAPI plugins on linux

content/test/plugin/plugin_windowless_test.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.
 
 #define STRSAFE_NO_DEPRECATE
 
 #include "content/test/plugin/plugin_windowless_test.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "content/test/plugin/plugin_client.h"
 
-#if defined(TOOLKIT_GTK)
-#include <gdk/gdkx.h>
-#endif
-
 // NPEvent does not exist on the Mac.
 #if defined(OS_MACOSX)
 typedef NPCocoaEvent WindowlessPluginTestEvent;
 #else
 typedef NPEvent WindowlessPluginTestEvent;
 #endif
 
 namespace NPAPIClient {
 
 namespace {
 
 // Remember the first plugin instance for tests involving multiple instances.
 WindowlessPluginTest* g_other_instance = NULL;
 
 void OnFinishTest(void* data) {
   static_cast<WindowlessPluginTest*>(data)->SignalTestCompleted();
 }
 
 bool IsPaintEvent(WindowlessPluginTestEvent* np_event) {
 #if defined(OS_WIN)
   return np_event->event == WM_PAINT;
 #elif defined(OS_MACOSX)
   return np_event->type == NPCocoaEventDrawRect;
-#elif defined(TOOLKIT_GTK)
-  return np_event->type == GraphicsExpose;
 #else
   NOTIMPLEMENTED();
   return false;
 #endif
 }
 
 bool IsMouseUpEvent(WindowlessPluginTestEvent* np_event) {
 #if defined(OS_WIN)
   return np_event->event == WM_LBUTTONUP;
 #elif defined(OS_MACOSX)
@@ skipping 260 matching lines @@
     error_string.append(StringForPoint(flipped_window_x, flipped_window_y));
     SetError(error_string);
   }
 #else
   SetError("Unimplemented");
 #endif
   SignalTestCompleted();
 }
 
 }  // namespace NPAPIClient