Rename PPB_Flash_DeviceID interface to PPB_Flash_DRM

ppapi/thunk/ppb_flash_drm_api.h

Index: ppapi/thunk/ppb_flash_drm_api.h
diff --git a/ppapi/thunk/ppb_flash_device_id_api.h b/ppapi/thunk/ppb_flash_drm_api.h
similarity index 80%
rename from ppapi/thunk/ppb_flash_device_id_api.h
rename to ppapi/thunk/ppb_flash_drm_api.h
index cbd1bf58e0600d32f410d0a3ca8d2677d0940e43..28d91becb4c3a0530c01f4cbaa981f32951fb145 100644
--- a/ppapi/thunk/ppb_flash_device_id_api.h
+++ b/ppapi/thunk/ppb_flash_drm_api.h
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "base/memory/ref_counted.h"
+#include "ppapi/c/private/ppb_flash_drm.h"
 #include "ppapi/thunk/ppapi_thunk_export.h"
 
 namespace ppapi {
@@ -11,9 +12,9 @@ class TrackedCallback;
 
 namespace thunk {
 
-class PPAPI_THUNK_EXPORT PPB_Flash_DeviceID_API {
+class PPAPI_THUNK_EXPORT PPB_Flash_DRM_API {
  public:
-  virtual ~PPB_Flash_DeviceID_API() {}
+  virtual ~PPB_Flash_DRM_API() {}
 
   virtual int32_t GetDeviceID(PP_Var* id,
                               scoped_refptr<TrackedCallback> callback) = 0;