Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.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 "modules/webgl/WebGL2RenderingContext.h"
 
 #include "bindings/modules/v8/OffscreenCanvasRenderingContext2DOrWebGLRenderingContextOrWebGL2RenderingContext.h"
 #include "bindings/modules/v8/RenderingContext.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
@@ skipping 10 matching lines @@
 #include "modules/webgl/WebGLCompressedTexturePVRTC.h"
 #include "modules/webgl/WebGLCompressedTextureS3TC.h"
 #include "modules/webgl/WebGLContextAttributeHelpers.h"
 #include "modules/webgl/WebGLContextEvent.h"
 #include "modules/webgl/WebGLDebugRendererInfo.h"
 #include "modules/webgl/WebGLDebugShaders.h"
 #include "modules/webgl/WebGLLoseContext.h"
 #include "platform/graphics/gpu/DrawingBuffer.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebGraphicsContext3DProvider.h"
-#include <memory>
 
 namespace blink {
 
 CanvasRenderingContext* WebGL2RenderingContext::Factory::create(HTMLCanvasElement* canvas, const CanvasContextCreationAttributes& attrs, Document&)
 {
     if (!RuntimeEnabledFeatures::unsafeES3APIsEnabled()) {
         canvas->dispatchEvent(WebGLContextEvent::create(EventTypeNames::webglcontextcreationerror, false, true, "Creation of WebGL2 contexts disabled."));
         return nullptr;
     }
 
     WebGLContextAttributes attributes = toWebGLContextAttributes(attrs);
-    std::unique_ptr<WebGraphicsContext3DProvider> contextProvider(createWebGraphicsContext3DProvider(canvas, attributes, 2));
+    OwnPtr<WebGraphicsContext3DProvider> contextProvider(createWebGraphicsContext3DProvider(canvas, attributes, 2));
     if (!contextProvider)
         return nullptr;
     gpu::gles2::GLES2Interface* gl = contextProvider->contextGL();
-    std::unique_ptr<Extensions3DUtil> extensionsUtil = Extensions3DUtil::create(gl);
+    OwnPtr<Extensions3DUtil> extensionsUtil = Extensions3DUtil::create(gl);
     if (!extensionsUtil)
         return nullptr;
     if (extensionsUtil->supportsExtension("GL_EXT_debug_marker")) {
         String contextLabel(String::format("WebGL2RenderingContext-%p", contextProvider.get()));
         gl->PushGroupMarkerEXT(0, contextLabel.ascii().data());
     }
 
     WebGL2RenderingContext* renderingContext = new WebGL2RenderingContext(canvas, std::move(contextProvider), attributes);
 
     if (!renderingContext->drawingBuffer()) {
         canvas->dispatchEvent(WebGLContextEvent::create(EventTypeNames::webglcontextcreationerror, false, true, "Could not create a WebGL2 context."));
         return nullptr;
     }
 
     renderingContext->initializeNewContext();
     renderingContext->registerContextExtensions();
 
     return renderingContext;
 }
 
 void WebGL2RenderingContext::Factory::onError(HTMLCanvasElement* canvas, const String& error)
 {
     canvas->dispatchEvent(WebGLContextEvent::create(EventTypeNames::webglcontextcreationerror, false, true, error));
 }
 
-WebGL2RenderingContext::WebGL2RenderingContext(HTMLCanvasElement* passedCanvas, std::unique_ptr<WebGraphicsContext3DProvider> contextProvider, const WebGLContextAttributes& requestedAttributes)
+WebGL2RenderingContext::WebGL2RenderingContext(HTMLCanvasElement* passedCanvas, PassOwnPtr<WebGraphicsContext3DProvider> contextProvider, const WebGLContextAttributes& requestedAttributes)
     : WebGL2RenderingContextBase(passedCanvas, std::move(contextProvider), requestedAttributes)
 {
 }
 
 WebGL2RenderingContext::~WebGL2RenderingContext()
 {
 
 }
 
 void WebGL2RenderingContext::setCanvasGetContextResult(RenderingContext& result)
@@ skipping 56 matching lines @@
     visitor->traceWrappers(m_webglCompressedTextureATC);
     visitor->traceWrappers(m_webglCompressedTextureETC1);
     visitor->traceWrappers(m_webglCompressedTexturePVRTC);
     visitor->traceWrappers(m_webglCompressedTextureS3TC);
     visitor->traceWrappers(m_webglDebugRendererInfo);
     visitor->traceWrappers(m_webglDebugShaders);
     visitor->traceWrappers(m_webglLoseContext);
 }
 
 } // namespace blink