Revert of [blink] Unique pointers in Platform.h

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

Index: third_party/WebKit/Source/platform/graphics/ImageBuffer.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/ImageBuffer.cpp b/third_party/WebKit/Source/platform/graphics/ImageBuffer.cpp
index fafd1fd4583499a82e02d02e5e60af3142733b8d..23e4a5182a3843191acbda42d9736111aab6af52 100644
--- a/third_party/WebKit/Source/platform/graphics/ImageBuffer.cpp
+++ b/third_party/WebKit/Source/platform/graphics/ImageBuffer.cpp
@@ -242,8 +242,8 @@
   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();
@@ -305,8 +305,8 @@
     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();