`chrome.browsingData` extension API can now remove data from protected origins.

chrome/common/extensions/api/browsing_data.json

Index: chrome/common/extensions/api/browsing_data.json
diff --git a/chrome/common/extensions/api/browsing_data.json b/chrome/common/extensions/api/browsing_data.json
index 7ba52ccc94be068be750f451ce0feeffe6354bd1..92a3f7697022140699cbb8c014c354cdc59ed74f 100644
--- a/chrome/common/extensions/api/browsing_data.json
+++ b/chrome/common/extensions/api/browsing_data.json
@@ -15,6 +15,28 @@
             "type": "number",
             "optional": true,
             "description": "Remove data accumulated on or after this date, represented in milliseconds since the epoch (accessible via the <code>getTime</code> method of the JavaScript <code>Date</code> object). If absent, defaults to 0 (which would remove all browsing data)."
+          },
+          "originTypes": {
+            "type": "object",
+            "optional": true,
+            "description": "An object whose properties specify which origin types ought to be cleared. If this object isn't specified, it defaults to clearing only \"unprotected\" origins. Please ensure that you <em>really</em> want to remove application data before adding 'protectedWeb' or 'extensions'.",
+            "properties": {
+              "unprotectedWeb": {
+                "type": "boolean",
+                "optional": true,
+                "description": "Normal websites."
+              },
+              "protectedWeb": {
+                "type": "boolean",
+                "optional": true,
+                "description": "Websites that have been installed as hosted applications (be careful!)."
+              },
+              "extension": {
+                "type": "boolean",
+                "optional": true,
+                "description": "Extensions and packaged applications a user has installed (be _really_ careful!)."
+              }
+            }
           }
         }
       }