Docserver: Gitiles auth and cron refactoring.

chrome/common/extensions/docs/templates/json/content_providers.json

 // === Overview ===
 //
 // This file configures where to find and how to serve content in the docserver.
 // It's the most fundamentally important file in all of the docserver.
 //
 // === Format ===
 //
 // Each entry declares a rule with:
 //  * An arbitrary identifier key e.g. "cr-extensions-examples".
 //  * What URL the rule should be invoked with, given by "serveFrom", e.g.
 //    "extensions/examples".
-//  * An object describing where the content originates, either "chromium"
-//    or "github".
+//  * An object describing where the content originates, either "chromium",
+//    "github", or "gcs".
 //  * "chromium" must provide a "dir" value specifying which chromium directory
 //     to look in, e.g. "extensions/samples".
 //  * "github" must provide "owner" and "repo" values specifying the owner of
 //    the GitHub repository, and the repository name, e.g. "GoogleChrome" and
 //    "chrome-app-samples" respectively.
 //
 // In the chromium example, when the user navigates to
 //
 //    developer.chrome.com/extensions/examples/some/sample/path
 //
@@ skipping 10 matching lines @@
 // There are some other properties that can be specified:
 //  * "supportsZip" indicates whether directories are allowed to be served as
 //    zip files. For safety this isn't supported for arbitrary URLs, only those
 //    within a rule that has "supportsZip": true.
 //  * "supportsTemplates" indicates whether HTML files should be treated and
 //    renderered as templates, versus just plain text. Complex documentation
 //    which interacts with docserver features (like API listing) need to set
 //    this to true. Otherwise, it's safer and more efficient to omit it.
 
 {
-  "cr-chrome-docs-home-gitiles": {
-    "gitiles": {
-      "dir": "chrome/docs"
-    },
-    "defaultExtensions": [".html", ".md"],
-    "serveFrom": "home-gitiles",
-    "supportsTemplates": true
-  },
   "cr-chrome-docs-home": {
     "chromium": {
       "dir": "chrome/docs"
     },
     "defaultExtensions": [".html", ".md"],
     "serveFrom": "home",
     "supportsTemplates": true
   },
   "cr-extensions-examples": {
     "chromium": {
@@ skipping 42 matching lines @@
   },
   "webstore-docs": {
     "defaultExtensions": [".html", ".md"],
     "gcs": {
       "bucket": "gs://chromedocs-webstore"
     },
     "serveFrom": "webstore",
     "supportsTemplates": true
   }
 }