Prompt to delete pending edits before changing the Gerrit CL description.

tests/git_cl_test.py

Index: tests/git_cl_test.py
diff --git a/tests/git_cl_test.py b/tests/git_cl_test.py
index 961801ed8ff7208b40981666d6b7cf41947ac951..ea9f836322d1e62e6c3e4a0a90c162b385a157c7 100755
--- a/tests/git_cl_test.py
+++ b/tests/git_cl_test.py
@@ -38,7 +38,7 @@ class ChangelistMock(object):
     return 1
   def GetDescription(self):
     return ChangelistMock.desc
-  def UpdateDescription(self, desc):
+  def UpdateDescription(self, force, desc):
     ChangelistMock.desc = desc
 
 
@@ -1664,7 +1664,7 @@ class TestGitCl(TestCase):
       # Simulate user changing something.
       return 'Some.\n\nBUG=123\n\nChange-Id: xxx'
 
-    def UpdateDescriptionRemote(_, desc):
+    def UpdateDescriptionRemote(_, force, desc):
       self.assertEquals(desc, 'Some.\n\nBUG=123\n\nChange-Id: xxx')
 
     self.mock(git_cl.sys, 'stdout', StringIO.StringIO())