Issue 42 - check for non-existent dump file in HTTPUpload::SendRequest.  r=bryner
Issue 42 - check for non-existent dump file in HTTPUpload::SendRequest.  r=bryner

git-svn-id: a14e546401035be51a469fbea25ecce70a1a22f2@186 4c0a9323-5329-0410-9bdc-e9ce6186880e

tomgr/google-breakpad,tomgr/google-breakpad,tomgr/google-breakpad,tomgr/google-breakpad,tomgr/google-breakpad