[Ozone-DRI] Removing MockDriSurface implementation

ui/ozone/platform/dri/dri_surface.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 "ui/ozone/platform/dri/dri_surface.h"
 
 #include <errno.h>
 #include <sys/mman.h>
 #include <sys/types.h>
 #include <xf86drm.h>
@@ skipping 13 matching lines @@
       bitmaps_(),
       front_buffer_(0),
       size_(size) {
 }
 
 DriSurface::~DriSurface() {
 }
 
 bool DriSurface::Initialize() {
   for (size_t i = 0; i < arraysize(bitmaps_); ++i) {
-    bitmaps_[i].reset(CreateBuffer());
+    bitmaps_[i].reset(new DriBuffer(dri_));
     // TODO(dnicoara) Should select the configuration based on what the
     // underlying system supports.
     SkImageInfo info = SkImageInfo::MakeN32Premul(size_.width(),
                                                   size_.height());
     if (!bitmaps_[i]->Initialize(info)) {
       return false;
     }
   }
 
   return true;
@@ skipping 24 matching lines @@
 
 gfx::Size DriSurface::Size() const {
   return size_;
 }
 
 SkCanvas* DriSurface::GetDrawableForWidget() {
   CHECK(backbuffer());
   return backbuffer()->canvas();
 }
 
-DriBuffer* DriSurface::CreateBuffer() { return new DriBuffer(dri_); }
-
 }  // namespace ui