Get rid of base::SharedMemory::NULLHandle();

content/browser/renderer_host/render_widget_host_view_aura_unittest.cc

Index: content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
index aea4d89025e6b06fc57be800cfeceb2ba60a7039..c47873eb96085c5ef28c2086f5b467e6bb0f0888 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
@@ -2869,8 +2869,8 @@ TEST_F(RenderWidgetHostViewAuraTest, DiscardDelegatedFrames) {
       display_compositor::HostSharedBitmapManager::current());
 
   for (size_t i = 0; i < (renderer_count - 1) * handles_per_frame; i++) {
-    bitmap_client.ChildAllocatedSharedBitmap(
-        1, base::SharedMemory::NULLHandle(), cc::SharedBitmap::GenerateId());
+    bitmap_client.ChildAllocatedSharedBitmap(1, base::SharedMemoryHandle(),
+                                             cc::SharedBitmap::GenerateId());
   }
 
   // Hiding this last bitmap should evict all but two frames.