Remove whitespace in the <ping> element closing tag in the comp updater.

components/update_client/update_client_unittest.cc

Index: components/update_client/update_client_unittest.cc
diff --git a/components/update_client/update_client_unittest.cc b/components/update_client/update_client_unittest.cc
index a858783c92e9bd5e5dc94fd7f583ae9c14af35d4..5d2db64811bf8ee60e8b452b24b7c5fc258ee0d0 100644
--- a/components/update_client/update_client_unittest.cc
+++ b/components/update_client/update_client_unittest.cc
@@ -1091,8 +1091,7 @@ TEST_F(UpdateClientTest, OneCrxDiffUpdate) {
                                         0ecde26c262bad942b112990'
                            fp='22'
                            hashdiff_sha256='73c6e2d4f783fc4ca5481e89e0b8bfce7aec
-                                            8ead3686290c94792658ec06f2f2'
-                           />
+                                            8ead3686290c94792658ec06f2f2'/>
                 </packages>
               </manifest>
             </updatecheck>
@@ -1569,8 +1568,7 @@ TEST_F(UpdateClientTest, OneCrxDiffUpdateFailsFullUpdateSucceeds) {
                                         0ecde26c262bad942b112990'
                            fp='22'
                            hashdiff_sha256='73c6e2d4f783fc4ca5481e89e0b8bfce7aec
-                                            8ead3686290c94792658ec06f2f2'
-                           />
+                                            8ead3686290c94792658ec06f2f2'/>
                 </packages>
               </manifest>
             </updatecheck>