Support partial interface for test support idls

Source/build/scripts/action_derivedsourcesallinone.py

Index: Source/build/scripts/action_derivedsourcesallinone.py
diff --git a/Source/build/scripts/action_derivedsourcesallinone.py b/Source/build/scripts/action_derivedsourcesallinone.py
index fec5088917a9e24775662d03a2aa2a5b268422d1..75729fe1b7873c3a055be46ecc8abebb1dc78306 100644
--- a/Source/build/scripts/action_derivedsourcesallinone.py
+++ b/Source/build/scripts/action_derivedsourcesallinone.py
@@ -198,19 +198,18 @@ def main(args):
     inputFileName = args[1]
     outputFileNames = args[inOutBreakIndex+1:]
 
-    inputFile = open(inputFileName, 'r')
     idlFileNames = []
     cygdriveNames = []
-    for line in inputFile:
-        idlFileName = line.rstrip().split(' ')[0]
-        if idlFileName.startswith("/cygdrive"):
-            cygdriveNames.append(idlFileName)
-        else:
-            idlFileNames.append(idlFileName)
+    with open(inputFileName) as inputFile:

[eseidel, 2013/10/10 06:08:37]

Woh, cxrazy this is no pep8, but I guess chromium style with studlyCaps?

[Nils Barth (inactive), 2013/10/10 06:17:34]

Nono, you're right, this should be under_scores:
http://www.chromium.org/developers/coding-style
http://www.chromium.org/blink/coding-style#TOC-Python

This is legacy code and we should fix it up;
I'll do that in a separate CL so this CL doesn't bloat.

[Nils Barth (inactive), 2013/10/10 08:51:02]

Python style (and bug fix!) for this file addressed in:
action_derivedsourcesallinone.py: Fix Python style and conditional bug
https://codereview.chromium.org/26802002/

+        for line in inputFile:
+            idlFileName = line.rstrip()
+            if idlFileName.startswith('/cygdrive'):

[eseidel, 2013/10/10 06:08:37]

Bleh.  Filesystem abstractions ftw.

+                cygdriveNames.append(idlFileName)
+            else:
+                idlFileNames.append(idlFileName)
 
     if cygdriveNames:
         idlFileNames.extend(resolveCygpath(cygdriveNames))
-    inputFile.close()
 
     filesMetaData = extractMetaData(idlFileNames)
     for fileName in outputFileNames: