Remove use_aura build arg.

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 61ad037dbc685532737023d676bb4c4bc61a6cb3..1b77b4d420336e71a68148e953dc43f86ae0cdb6 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -4006,8 +4006,7 @@ error::Error GLES2DecoderImpl::HandleResizeCHROMIUM(uint32 immediate_data_size,
   width = std::max(1U, width);
   height = std::max(1U, height);
 
-#if defined(OS_POSIX) && !defined(OS_MACOSX) && \
-    !defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
+#if defined(OS_POSIX) && !defined(OS_MACOSX)
   // Make sure that we are done drawing to the back buffer before resizing.
   glFinish();
 #endif