Change namespace from ui to gfx for NativePixmap related code

ui/ozone/platform/drm/gpu/gbm_surface.cc

 // Copyright 2016 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 "ui/ozone/platform/drm/gpu/gbm_surface.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "ui/gfx/native_pixmap.h"
@@ skipping 104 matching lines @@
 void GbmSurface::BindFramebuffer() {
   gl::ScopedFramebufferBinder fb(fbo_);
   glFramebufferTexture2DEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
                             textures_[current_surface_], 0);
 }
 
 bool GbmSurface::CreatePixmaps() {
   if (!fbo_)
     return true;
   for (size_t i = 0; i < arraysize(textures_); i++) {
-    scoped_refptr<NativePixmap> pixmap = surface_factory()->CreateNativePixmap(
-        widget(), GetSize(), gfx::BufferFormat::BGRA_8888,
-        gfx::BufferUsage::SCANOUT);
+    scoped_refptr<gfx::NativePixmap> pixmap =
+        surface_factory()->CreateNativePixmap(widget(), GetSize(),
+                                              gfx::BufferFormat::BGRA_8888,
+                                              gfx::BufferUsage::SCANOUT);
     if (!pixmap)
       return false;
-    scoped_refptr<GLImageNativePixmap> image =
-        new GLImageNativePixmap(GetSize(), GL_BGRA_EXT);
+    scoped_refptr<gl::GLImageNativePixmap> image =
+        new gl::GLImageNativePixmap(GetSize(), GL_BGRA_EXT);
     if (!image->Initialize(pixmap.get(), gfx::BufferFormat::BGRA_8888))
       return false;
     images_[i] = image;
     // Bind image to texture.
     gl::ScopedTextureBinder binder(GL_TEXTURE_2D, textures_[i]);
     if (!images_[i]->BindTexImage(GL_TEXTURE_2D))
       return false;
   }
   return true;
 }
 
 }  // namespace ui