Moving the MHTML API out of experimental and renaming it.

chrome/common/extensions/docs/samples.json

 {
   "api": {
     "chrome.bookmarks.create": "bookmarks.html#method-create",
     "chrome.bookmarks.export": "bookmarks.html#method-export",
     "chrome.bookmarks.get": "bookmarks.html#method-get",
     "chrome.bookmarks.getChildren": "bookmarks.html#method-getChildren",
     "chrome.bookmarks.getRecent": "bookmarks.html#method-getRecent",
     "chrome.bookmarks.getSubTree": "bookmarks.html#method-getSubTree",
     "chrome.bookmarks.getTree": "bookmarks.html#method-getTree",
     "chrome.bookmarks.import": "bookmarks.html#method-import",
@@ skipping 49 matching lines @@
     "chrome.experimental.devtools.inspectedWindow.getResources": "experimental.devtools.inspectedWindow.html#method-getResources",
     "chrome.experimental.devtools.inspectedWindow.onResourceAdded": "experimental.devtools.inspectedWindow.html#event-onResourceAdded",
     "chrome.experimental.devtools.inspectedWindow.onResourceContentCommitted": "experimental.devtools.inspectedWindow.html#event-onResourceContentCommitted",
     "chrome.experimental.devtools.inspectedWindow.reload": "experimental.devtools.inspectedWindow.html#method-reload",
     "chrome.experimental.devtools.network.getHAR": "experimental.devtools.network.html#method-getHAR",
     "chrome.experimental.devtools.network.onNavigated": "experimental.devtools.network.html#event-onNavigated",
     "chrome.experimental.devtools.network.onRequestFinished": "experimental.devtools.network.html#event-onRequestFinished",
     "chrome.experimental.devtools.panels.create": "experimental.devtools.panels.html#method-create",
     "chrome.experimental.devtools.panels.setOpenResourceHandler": "experimental.devtools.panels.html#method-setOpenResourceHandler",
     "chrome.experimental.infobars.show": "experimental.infobars.html#method-show",
-    "chrome.experimental.savePage.saveAsMHTML": "experimental.savePage.html#method-saveAsMHTML",
     "chrome.experimental.speechInput.isRecording": "experimental.speechInput.html#method-isRecording",
     "chrome.experimental.speechInput.onError": "experimental.speechInput.html#event-onError",
     "chrome.experimental.speechInput.onResult": "experimental.speechInput.html#event-onResult",
     "chrome.experimental.speechInput.onSoundEnd": "experimental.speechInput.html#event-onSoundEnd",
     "chrome.experimental.speechInput.onSoundStart": "experimental.speechInput.html#event-onSoundStart",
     "chrome.experimental.speechInput.start": "experimental.speechInput.html#method-start",
     "chrome.experimental.speechInput.stop": "experimental.speechInput.html#method-stop",
     "chrome.experimental.storage.onChanged": "experimental.storage.html#event-onChanged",
     "chrome.experimental.webRequest.addEventListener": "experimental.webRequest.html#method-addEventListener",
     "chrome.experimental.webRequest.eventHandled": "experimental.webRequest.html#method-eventHandled",
@@ skipping 49 matching lines @@
     "chrome.omnibox.onInputEntered": "omnibox.html#event-onInputEntered",
     "chrome.omnibox.onInputStarted": "omnibox.html#event-onInputStarted",
     "chrome.omnibox.sendSuggestions": "omnibox.html#method-sendSuggestions",
     "chrome.omnibox.setDefaultSuggestion": "omnibox.html#method-setDefaultSuggestion",
     "chrome.pageAction.hide": "pageAction.html#method-hide",
     "chrome.pageAction.onClicked": "pageAction.html#event-onClicked",
     "chrome.pageAction.setIcon": "pageAction.html#method-setIcon",
     "chrome.pageAction.setPopup": "pageAction.html#method-setPopup",
     "chrome.pageAction.setTitle": "pageAction.html#method-setTitle",
     "chrome.pageAction.show": "pageAction.html#method-show",
+    "chrome.pageCapture.saveAsMHTML": "pageCapture.html#method-saveAsMHTML",
     "chrome.permissions.contains": "permissions.html#method-contains",
     "chrome.permissions.getAll": "permissions.html#method-getAll",
     "chrome.permissions.onAdded": "permissions.html#event-onAdded",
     "chrome.permissions.onRemoved": "permissions.html#event-onRemoved",
     "chrome.permissions.remove": "permissions.html#method-remove",
     "chrome.permissions.request": "permissions.html#method-request",
     "chrome.proxy.onProxyError": "proxy.html#event-onProxyError",
     "chrome.tabs.captureVisibleTab": "tabs.html#method-captureVisibleTab",
     "chrome.tabs.connect": "tabs.html#method-connect",
     "chrome.tabs.create": "tabs.html#method-create",
@@ skipping 2319 matching lines @@
       "source_files": [
         "manifest.json",
         "popup.html",
         "popup.js",
         "sample.css"
       ],
       "source_hash": "62ca453d8d1551ff63dd7c78b49d546bc3af17c6",
       "zip_path": "examples\/api\/extension\/isAllowedAccess.zip"
     }
   ]
-}
+}