Update file version info/memory details/process utils to use string16.

BUG=23581
TEST=everything still works

Review URL: http://codereview.chromium.org/5968008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70071 0039d316-1c4b-4281-b951-d872f2087c98

• base/file_version_info.h[diff]
• base/file_version_info_mac.h[diff]
• base/file_version_info_mac.mm[diff]
• base/file_version_info_win.cc[diff]
• base/file_version_info_win.h[diff]
• base/process_util.cc[diff]
• base/process_util.h[diff]
• base/process_util_linux.cc[diff]
• base/process_util_mac.mm[diff]
• base/process_util_posix.cc[diff]
• chrome/app/breakpad_win.cc[diff]
• chrome/browser/automation/testing_automation_provider.cc[diff]
• chrome/browser/browser_about_handler.cc[diff]
• chrome/browser/memory_details.cc[diff]
• chrome/browser/memory_details.h[diff]
• chrome/browser/memory_details_linux.cc[diff]
• chrome/browser/memory_details_mac.cc[diff]
• chrome/browser/memory_details_win.cc[diff]
• chrome/browser/process_singleton_linux.cc[diff]
• chrome/browser/process_singleton_uitest.cc[diff]
• chrome/browser/shell_integration_linux.cc[diff]
• chrome/browser/shell_integration_unittest.cc[diff]
• chrome/common/chrome_constants.cc[diff]
• chrome/common/chrome_constants.h[diff]
• chrome/common/chrome_version_info.cc[diff]
• chrome/test/in_process_browser_test.cc[diff]
• chrome/test/reliability/page_load_test.cc[diff]
• chrome/test/startup/startup_test.cc[diff]
• chrome/test/ui/ui_test.cc[diff]
• chrome_frame/crash_reporting/minidump_test.cc[diff]
• chrome_frame/test/reliability/page_load_test.cc[diff]
• chrome_frame/test/util_unittests.cc[diff]
• net/test/test_server_posix.cc[diff]
• webkit/plugins/npapi/plugin_lib_win.cc[diff]