content: Some code cleanup related to shared memory allocation.

content/renderer/renderer_clipboard_delegate.cc

Index: content/renderer/renderer_clipboard_delegate.cc
diff --git a/content/renderer/renderer_clipboard_delegate.cc b/content/renderer/renderer_clipboard_delegate.cc
index b9b7d1c542b6ae3933d1b309580450234ed4188c..1fb70deb3c7986c5759efc55e007ad6853e53b3c 100644
--- a/content/renderer/renderer_clipboard_delegate.cc
+++ b/content/renderer/renderer_clipboard_delegate.cc
@@ -138,7 +138,7 @@ bool RendererClipboardDelegate::WriteImage(ui::ClipboardType clipboard_type,
 
     // Allocate a shared memory buffer to hold the bitmap bits.
     uint32_t buf_size = checked_buf_size.ValueOrDie();
-    shared_buf = ChildThreadImpl::current()->AllocateSharedMemory(buf_size);
+    shared_buf = ChildThreadImpl::AllocateSharedMemory(buf_size);
     if (!shared_buf)
       return false;
     if (!shared_buf->Map(buf_size))