[Fuchsia] Fix gen_build_defs.py to recognize device_profile sdk parts

The script was failing in new SDK because the new SDK added new part
type 'device_profile' that the script didn't recognize. Added the new
type to the list. Also fixed the error-handling code - previously it
was failing with NameError while trying to throw an exception to report
the unrecognized part type.

Change-Id: I5f9e59edf4ed1532c1ed7fd6a23007a3f11c5ecf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1664791
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Auto-Submit: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#670155}

third_party/fuchsia-sdk/gen_build_defs.py

@@ -170,11 +170,12 @@ _CONVERSION_FUNCTION_MAP = {
 
   # No need to build targets for these types yet.
   'dart_library': ConvertNoOp,
+  'device_profile': ConvertNoOp,
+  'documentation': ConvertNoOp,
   'host_tool': ConvertNoOp,
   'image': ConvertNoOp,
   'loadable_module': ConvertNoOp,
   'sysroot': ConvertNoOp,
-  'documentation': ConvertNoOp,
 }
 
 
@@ -193,7 +194,7 @@ def ConvertSdkManifests():
       convert_function = _CONVERSION_FUNCTION_MAP.get(part['type'])
       if convert_function is None:
         raise Exception('Unexpected SDK artifact type %s in %s.' %
-                        (parsed['type'], next_part))
+                        (parsed['type'], part['meta']))
 
       converted = convert_function(parsed)
       if converted: