Revert of [blink] Unique pointers in Platform.h

third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 848 matching lines @@
 }
 
 bool Canvas2DLayerBridge::RestoreSurface() {
   DCHECK(!destruction_in_progress_);
   if (destruction_in_progress_ || !IsAccelerated())
     return false;
   DCHECK(!surface_);
 
   gpu::gles2::GLES2Interface* shared_gl = nullptr;
   layer_->ClearTexture();
-  context_provider_ =
-      Platform::Current()->CreateSharedOffscreenGraphicsContext3DProvider();
+  context_provider_ = WTF::WrapUnique(
+      Platform::Current()->CreateSharedOffscreenGraphicsContext3DProvider());
   if (context_provider_)
     shared_gl = context_provider_->ContextGL();
 
   if (shared_gl && shared_gl->GetGraphicsResetStatusKHR() == GL_NO_ERROR) {
     GrContext* gr_ctx = context_provider_->GetGrContext();
     bool surface_is_accelerated;
     sk_sp<SkSurface> surface(CreateSkSurface(gr_ctx, size_, msaa_sample_count_,
                                              opacity_mode_, color_params_,
                                              &surface_is_accelerated));
     if (!surface_)
@@ skipping 247 matching lines @@
     default;
 
 void Canvas2DLayerBridge::Logger::ReportHibernationEvent(
     HibernationEvent event) {
   DEFINE_STATIC_LOCAL(EnumerationHistogram, hibernation_histogram,
                       ("Canvas.HibernationEvents", kHibernationEventCount));
   hibernation_histogram.Count(event);
 }
 
 }  // namespace blink