Make credential_path a page attribute instead of page_set attribute.

tools/telemetry/telemetry/core/util.py

Index: tools/telemetry/telemetry/core/util.py
diff --git a/tools/telemetry/telemetry/core/util.py b/tools/telemetry/telemetry/core/util.py
index 460eb61ec7fb42bd131ac891b96af6769eaaeef3..9e17d8597dbea4bf1efbca23f0303aed723e3a58 100644
--- a/tools/telemetry/telemetry/core/util.py
+++ b/tools/telemetry/telemetry/core/util.py
@@ -126,6 +126,7 @@ def GetBuildDirectories():
     for build_type in build_types:
       yield build_dir, build_type
 
+
 def GetSequentialFileName(base_name):
   """Returns the next sequential file name based on |base_name| and the
   existing files. base_name should not contain extension.
@@ -142,3 +143,16 @@ def GetSequentialFileName(base_name):
       break
     index = index + 1
   return output_name
+
+
+def GetAbsPathIfExist(path, base_dir):

[dtu, 2014/10/06 21:30:22]

Is this the same as os.path.realpath(os.path.relpath(path, base_dir))?

If you decide to keep this function, it should go in telemetry.util.path.

[nednguyen, 2014/10/07 20:11:09]

Not really, this returns path if path is already an absolute path.
Done.

[dtu, 2014/10/08 21:34:18]

This is true of realpath(relpath()) as well, but if os.path.join works, that's
also great.

+  """ Returns the absolute path for |path| if it exists. If |path| is relative,
+  then it is relative to the directory of |base_dir|. """
+  abs_path = None
+  if os.path.isabs(path):
+    abs_path = path
+  else:
+    abs_path = os.path.join(base_dir, path)
+  if not os.path.exists(abs_path):
+    return None
+  return os.path.realpath(abs_path)