merge fx-team to mozilla-central a=merge

browser/app/profile/firefox.js

browser/base/content/test/general/browser.ini

...ntent/test/general/browser_autocomplete_edit_completed.js

browser/components/migration/ChromeProfileMigrator.js

.../AppData/Local/Google/Chrome/User Data/Default/Login Data

.../components/migration/tests/unit/test_Chrome_passwords.js

browser/components/migration/tests/unit/xpcshell.ini

browser/devtools/styleinspector/rule-view.js

browser/devtools/styleinspector/test/browser.ini

.../styleinspector/test/browser_ruleview_edit-property_04.js

.../styleinspector/test/browser_ruleview_edit-property_05.js

.../styleinspector/test/browser_ruleview_edit-property_06.js

.../styleinspector/test/browser_ruleview_edit-property_07.js

browser/themes/windows/browser.css

browser/themes/windows/jar.mn

browser/themes/windows/tabbrowser/connecting@2x.png

browser/themes/windows/tabbrowser/loading.png

browser/themes/windows/tabbrowser/loading@2x.png

...themes/windows/tabbrowser/tab-background-end-preWin10.png

...mes/windows/tabbrowser/tab-background-end-preWin10@2x.png