Refactor dmprof: Split dmprof.py into modules.

tools/deep_memory_profiler/lib/exceptions.py

Index: tools/deep_memory_profiler/lib/exceptions.py
diff --git a/tools/deep_memory_profiler/lib/exceptions.py b/tools/deep_memory_profiler/lib/exceptions.py
new file mode 100644
index 0000000000000000000000000000000000000000..2c68af72cc2d33450e951df18a645568af431b89
--- /dev/null
+++ b/tools/deep_memory_profiler/lib/exceptions.py
@@ -0,0 +1,22 @@
+# Copyright 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+class EmptyDumpException(Exception):
+  def __str__(self):
+    return repr(self.args[0])
+
+
+class ParsingException(Exception):
+  def __str__(self):
+    return repr(self.args[0])
+
+
+class InvalidDumpException(ParsingException):
+  def __str__(self):
+    return "invalid heap profile dump: %s" % repr(self.args[0])
+
+
+class ObsoleteDumpVersionException(ParsingException):
+  def __str__(self):
+    return "obsolete heap profile dump version: %s" % repr(self.args[0])