Make it possible to build gralloc_drm.

third_party/hwcplus/include/hardware/gralloc.h

Index: third_party/hwcplus/include/hardware/gralloc.h
diff --git a/third_party/hwcplus/include/hardware/gralloc.h b/third_party/hwcplus/include/hardware/gralloc.h
index 0dbebcff214da43e69fd3227e2c3c1ba68626cc8..6973f7cf913bc07235508228f21e7b3f5a665be6 100644
--- a/third_party/hwcplus/include/hardware/gralloc.h
+++ b/third_party/hwcplus/include/hardware/gralloc.h
@@ -130,6 +130,14 @@ enum {
 
 /*****************************************************************************/
 
+enum {

[rjkroege, 2014/05/26 20:49:59]

Does this belong here? The implication is that it should be added externally?
Like in the HAL?

Perhaps it could be in a separate file? 

[fjhenigman, 2014/06/01 20:56:52]

This is part of the HAL interface: libhardware lets you load the gralloc module,
then you pass these enums to the "perform" method of that module.
If you needed to do this in chrome code, you wouldn't want them to be defined
only in the gralloc implementation in chromeos-land, if that's what you mean by
not "here."
So I think they belong here.
Android-x86 put them in this file.  Do you prefer they be in their own file?

+    GRALLOC_MODULE_PERFORM_GET_DRM_FD                = 0x80000002,
+    GRALLOC_MODULE_PERFORM_GET_DRM_MAGIC             = 0x80000003,
+    GRALLOC_MODULE_PERFORM_AUTH_DRM_MAGIC            = 0x80000004,
+    GRALLOC_MODULE_PERFORM_ENTER_VT                  = 0x80000005,
+    GRALLOC_MODULE_PERFORM_LEAVE_VT                  = 0x80000006,
+};
+
 /**
  * Every hardware module must have a data structure named HAL_MODULE_INFO_SYM
  * and the fields of this data structure must begin with hw_module_t