Move the WebPluginResourceClient interface to its own header. Also fix up method order in webplugin…

content/child/npapi/webplugin_delegate_impl_gtk.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/child/npapi/webplugin_delegate_impl.h"
 
 #include <gtk/gtk.h>
 #include <gdk/gdkx.h>
 
 #include <string>
@@ skipping 77 matching lines @@
   gfx::PluginWindowHandle handle =
       windowless_ ? 0 : gtk_plug_get_id(GTK_PLUG(plug_));
   plugin_->SetWindow(handle);
   return true;
 }
 
 void WebPluginDelegateImpl::PlatformDestroyInstance() {
   // Nothing to do here.
 }
 
-void WebPluginDelegateImpl::Paint(WebKit::WebCanvas* canvas,
-                                  const gfx::Rect& rect) {
+void WebPluginDelegateImpl::Paint(SkCanvas* canvas, const gfx::Rect& rect) {
   if (!windowless_ || !skia::SupportsPlatformPaint(canvas))
     return;
   skia::ScopedPlatformPaint scoped_platform_paint(canvas);
   cairo_t* context = scoped_platform_paint.GetPlatformSurface();
   WindowlessPaint(context, rect);
 }
 
 bool WebPluginDelegateImpl::WindowedCreatePlugin() {
   DCHECK(!windowed_handle_);
   DCHECK(!plug_);
@@ skipping 632 matching lines @@
     // it. There is a nasty race condition here with the multiprocess browser
     // as someone might be setting the cursor in the main process as well.
     *cursor = current_windowless_cursor_;
   }
 #endif
 
   return ret;
 }
 
 }  // namespace content