C++ readability change for cindylau.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/2090008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@48733 0039d316-1c4b-4281-b951-d872f2087c98
  virtual Profile* GetOffTheRecordProfile() {
    if (IsOffTheRecord())
      return this;
    else
      return linked_profile_;
  }

  virtual Profile* GetOffTheRecordProfile() {
    if (IsOffTheRecord())
      return this;
    else
      return linked_profile_;
  }
