Merge the last PGO-green inbound changeset to m-c.

accessible/src/base/nsAccDocManager.cpp

accessible/src/base/nsDocAccessible.cpp

accessible/src/jsat/AccessFu.jsm

accessible/src/jsat/Presenters.jsm

accessible/src/xul/nsXULTreeAccessible.cpp

accessible/src/xul/nsXULTreeGridAccessible.cpp

browser/base/content/browser-thumbnails.js

browser/config/mozconfigs/win32/nightly

browser/config/mozconfigs/win64/nightly

...ser/devtools/debugger/test/browser_dbg_propertyview-07.js

...ser/devtools/debugger/test/browser_dbg_propertyview-08.js

chrome/src/nsChromeRegistry.cpp

chrome/src/nsChromeRegistryChrome.cpp

chrome/src/nsChromeRegistryChrome.h

chrome/src/nsChromeRegistryContent.cpp

content/base/src/nsContentUtils.cpp

content/base/src/nsCrossSiteListenerProxy.cpp

content/base/src/nsDOMAttributeMap.cpp

content/base/src/nsDOMFileReader.cpp

content/base/src/nsDocument.cpp