Revert of [blink] Unique pointers in Platform.h

third_party/WebKit/Source/platform/graphics/gpu/SharedContextRateLimiter.cpp

 // Copyright 2015 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 "platform/graphics/gpu/SharedContextRateLimiter.h"
 
 #include <memory>
 #include "gpu/GLES2/gl2extchromium.h"
 #include "platform/graphics/gpu/Extensions3DUtil.h"
 #include "platform/wtf/PtrUtil.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebGraphicsContext3DProvider.h"
 #include "third_party/khronos/GLES2/gl2.h"
 
 namespace blink {
 
 std::unique_ptr<SharedContextRateLimiter> SharedContextRateLimiter::Create(
     unsigned max_pending_ticks) {
   return WTF::WrapUnique(new SharedContextRateLimiter(max_pending_ticks));
 }
 
 SharedContextRateLimiter::SharedContextRateLimiter(unsigned max_pending_ticks)
     : max_pending_ticks_(max_pending_ticks), can_use_sync_queries_(false) {
-  context_provider_ =
-      Platform::Current()->CreateSharedOffscreenGraphicsContext3DProvider();
+  context_provider_ = WTF::WrapUnique(
+      Platform::Current()->CreateSharedOffscreenGraphicsContext3DProvider());
   if (!context_provider_)
     return;
 
   gpu::gles2::GLES2Interface* gl = context_provider_->ContextGL();
   if (gl && gl->GetGraphicsResetStatusKHR() == GL_NO_ERROR) {
     std::unique_ptr<Extensions3DUtil> extensions_util =
         Extensions3DUtil::Create(gl);
     // TODO(junov): when the GLES 3.0 command buffer is ready, we could use
     // fenceSync instead.
     can_use_sync_queries_ =
@@ skipping 38 matching lines @@
     while (queries_.size() > 0) {
       gl->DeleteQueriesEXT(1, &queries_.front());
       queries_.pop_front();
     }
   } else {
     queries_.clear();
   }
 }
 
 }  // namespace blink