content: Cleanup GpuMemoryBufferImpl destruction.

content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc

Index: content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc b/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc
index cb5c4a5166f1c51506e0435774c0535359cbd34f..1dbd8de5ddea8ce9554ad73c9da901532c2ff8ac 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc
+++ b/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc
@@ -14,6 +14,9 @@ namespace {
 
 base::StaticAtomicSequenceNumber g_next_buffer_id;
 
+void Noop() {
+}
+
 void GpuMemoryBufferCreated(
     const gfx::Size& size,
     unsigned internalformat,
@@ -22,7 +25,8 @@ void GpuMemoryBufferCreated(
   DCHECK_EQ(gfx::OZONE_NATIVE_BUFFER, handle.type);
 
   scoped_ptr<GpuMemoryBufferImplOzoneNativeBuffer> buffer(
-      new GpuMemoryBufferImplOzoneNativeBuffer(size, internalformat));
+      new GpuMemoryBufferImplOzoneNativeBuffer(
+          size, internalformat, base::Bind(&Noop)));
   if (!buffer->InitializeFromHandle(handle)) {
     callback.Run(scoped_ptr<GpuMemoryBufferImpl>());
     return;
@@ -43,11 +47,13 @@ void GpuMemoryBufferCreatedForChildProcess(
 
 GpuMemoryBufferImplOzoneNativeBuffer::GpuMemoryBufferImplOzoneNativeBuffer(
     const gfx::Size& size,
-    unsigned internalformat)
-    : GpuMemoryBufferImpl(size, internalformat) {
+    unsigned internalformat,
+    const DestructionCallback& callback)
+    : GpuMemoryBufferImpl(size, internalformat), callback_(callback) {
 }
 
 GpuMemoryBufferImplOzoneNativeBuffer::~GpuMemoryBufferImplOzoneNativeBuffer() {
+  callback_.Run();
 }
 
 // static