Revert of [blink] Unique pointers in Platform.h

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

 /*
  * Copyright (c) 2008, Google Inc. All rights reserved.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 224 matching lines @@
     return false;
 
   DCHECK(texture_image->isTextureBacked());  // The isAccelerated() check above
                                              // should guarantee this.
   // Get the texture ID, flushing pending operations if needed.
   const GrGLTextureInfo* texture_info = skia::GrBackendObjectToGrGLTextureInfo(
       texture_image->getTextureHandle(true));
   if (!texture_info || !texture_info->fID)
     return false;
 
-  std::unique_ptr<WebGraphicsContext3DProvider> provider =
-      Platform::Current()->CreateSharedOffscreenGraphicsContext3DProvider();
+  std::unique_ptr<WebGraphicsContext3DProvider> provider = WTF::WrapUnique(
+      Platform::Current()->CreateSharedOffscreenGraphicsContext3DProvider());
   if (!provider || !provider->GetGrContext())
     return false;
   gpu::gles2::GLES2Interface* shared_gl = provider->ContextGL();
 
   gpu::Mailbox mailbox;
 
   // Contexts may be in a different share group. We must transfer the texture
   // through a mailbox first.
   shared_gl->GenMailboxCHROMIUM(mailbox.name);
   shared_gl->ProduceTextureDirectCHROMIUM(texture_info->fID,
@@ skipping 41 matching lines @@
   gr_context->resetContext(kTextureBinding_GrGLBackendState);
 
   return true;
 }
 
 bool ImageBuffer::CopyRenderingResultsFromDrawingBuffer(
     DrawingBuffer* drawing_buffer,
     SourceDrawingBuffer source_buffer) {
   if (!drawing_buffer || !surface_->IsAccelerated())
     return false;
-  std::unique_ptr<WebGraphicsContext3DProvider> provider =
-      Platform::Current()->CreateSharedOffscreenGraphicsContext3DProvider();
+  std::unique_ptr<WebGraphicsContext3DProvider> provider = WTF::WrapUnique(
+      Platform::Current()->CreateSharedOffscreenGraphicsContext3DProvider());
   if (!provider)
     return false;
   gpu::gles2::GLES2Interface* gl = provider->ContextGL();
   GLuint texture_id = surface_->GetBackingTextureHandleForOverwrite();
   if (!texture_id)
     return false;
 
   gl->Flush();
 
   return drawing_buffer->CopyToPlatformTexture(
@@ skipping 246 matching lines @@
   DCHECK(MIMETypeRegistry::IsSupportedImageMIMETypeForEncoding(mime_type));
 
   Vector<unsigned char> result;
   if (!EncodeImage(mime_type, quality, &result))
     return "data:,";
 
   return "data:" + mime_type + ";base64," + Base64Encode(result);
 }
 
 }  // namespace blink