Convert //content from scoped_ptr to std::unique_ptr

content/public/renderer/render_thread.h

Index: content/public/renderer/render_thread.h
diff --git a/content/public/renderer/render_thread.h b/content/public/renderer/render_thread.h
index 7f88da91b1d88680fbc329157e78a62a252035c5..4a1ec5799a479fbcb5d8d9ba3c72504749f0a87a 100644
--- a/content/public/renderer/render_thread.h
+++ b/content/public/renderer/render_thread.h
@@ -77,7 +77,7 @@ class CONTENT_EXPORT RenderThread : virtual public ChildThread {
 
   // Asks the host to create a block of shared memory for the renderer.
   // The shared memory allocated by the host is returned back.
-  virtual scoped_ptr<base::SharedMemory> HostAllocateSharedMemoryBuffer(
+  virtual std::unique_ptr<base::SharedMemory> HostAllocateSharedMemoryBuffer(
       size_t buffer_size) = 0;
 
   virtual cc::SharedBitmapManager* GetSharedBitmapManager() = 0;