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

content/browser/frame_host/render_widget_host_view_child_frame.cc

 // 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.
 
 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
 #include "content/browser/frame_host/cross_process_frame_connector.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/view_messages.h"
@@ skipping 283 matching lines @@
 }
 #endif // defined(OS_MACOSX)
 
 #if defined(OS_ANDROID)
 void RenderWidgetHostViewChildFrame::ShowDisambiguationPopup(
     const gfx::Rect& target_rect,
     const SkBitmap& zoomed_bitmap) {
 }
 #endif  // defined(OS_ANDROID)
 
-#if defined(TOOLKIT_GTK)
-GdkEventButton* RenderWidgetHostViewChildFrame::GetLastMouseDown() {
-  return NULL;
-}
-
-gfx::NativeView RenderWidgetHostViewChildFrame::BuildInputMethodsGtkMenu() {
-  return NULL;
-}
-#endif  // defined(TOOLKIT_GTK)
-
 BackingStore* RenderWidgetHostViewChildFrame::AllocBackingStore(
     const gfx::Size& size) {
   NOTREACHED();
   return NULL;
 }
 
 void RenderWidgetHostViewChildFrame::CopyFromCompositingSurface(
     const gfx::Rect& src_subrect,
     const gfx::Size& /* dst_size */,
     const base::Callback<void(bool, const SkBitmap&)>& callback,
@@ skipping 46 matching lines @@
     const {
   return NULL;
 }
 #endif // defined(OS_WIN)
 
 SkBitmap::Config RenderWidgetHostViewChildFrame::PreferredReadbackFormat() {
   return SkBitmap::kARGB_8888_Config;
 }
 
 }  // namespace content