Move Mime type handling to streamsPrivate API, so that it works on Desktop Chrome.

chrome/common/extensions/api/file_browser_handler.json

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 [
   {
     "namespace":"fileBrowserHandler",
     "platforms": ["chromeos"],
     "types": [
       {
         "id": "FileHandlerExecuteEventDetails",
         "type": "object",
         "description": "Event details payload for fileBrowserHandler.onExecute event.",
         "properties": {
           "entries": {
             "type": "array",
             "items": { "type": "any" },
             "description": "Array of Entry instances representing files that are targets of this action (selected in ChromeOS file browser)."
           },
           "tab_id" : {

[Matt Perry, 2013/03/01 22:15:16]

oops - this should use a javaScriptStyle name.

what about this: (in a future CL) Change this to tabId, and write a custom
argument massager[1] to add an alias to tab_id for backwards compat.

[1] See
https://code.google.com/p/chromium/codesearch#chromium/src/chrome/renderer/re...
for an example

[Zachary Kuznia, 2013/03/04 06:09:43]

Bug filed: crbug.com/179767

             "type": "integer",
             "optional": true,
             "description": "The ID of the tab that raised this event. Tab IDs are unique within a browser session."
           }
         }
       }
     ],
 
     "events": [
       {
@@ skipping 17 matching lines @@
         "name": "onExecuteContentHandler",
         "type": "function",
         "description": "Fired when a resource is fetched which matches a mime type handled by this extension. The resource request is cancelled, and the extension is expected to handle the request. The event is restricted to a small number of white-listed fileBrowserHandlers.",
         "parameters": [
           {
             "name": "mime_type",
             "type": "string",
             "description": "The MIME type of the intercepted URL request."
           },
           {
+            "name": "original_url",

[Matt Perry, 2013/03/01 22:15:16]

these should all be javaScriptStyle as well. Since they're event handler args, I
think these can change without breaking anything.

[Zachary Kuznia, 2013/03/04 06:09:43]

Actually, I meant to remove this API, since it's being move to streamsPrivate.

+            "type": "string",
+            "description": "The original URL that was intercepted."
+          },
+          {
             "name": "content_url",
             "type": "string",
             "description": "The intercepted URL request. The handler should fetch and handle data referenced by the URL."
           }
         ]
       }
     ],
 
     "functions": [
       {
@@ skipping 41 matching lines @@
                   }
                 }
               }
             ]
           }
         ]
       }
     ]
   }
 ]