Change the web store private install API to accept a localized extension name.

chrome/common/extensions/api/extension_api.json

 [
   {
     "namespace": "extension",
     "unprivileged": true,
     "types": [
       {
         "id": "MessageSender",
         "type": "object",
         "description": "An object containing information about the script context that sent a message or request.",
         "properties": {
@@ skipping 5132 matching lines @@
           },
           {
             "name": "callback",
             "type": "function",
             "optional": "true",
             "parameters": []
           }
         ]
       },
       {
-        "name": "beginInstallWithManifest",
+        "name": "beginInstallWithManifest2",
         "description": "Initiates the install process for the given extension. This must be called during a user gesture.",
         "parameters": [
           {
-            "name": "id",
-            "type": "string",
-            "description": "The id of the extension to be installled.",
-            "minLength": 32,
-            "maxLength": 32
-          },
-          {
-            "name": "icon_data",
-            "type": "string",
-            "description": "An icon as a base64-encoded image, displayed in a confirmation dialog."
-          },
-          {
-            "name": "manifest_json",
-            "type": "string",
-            "description": "A string with the contents of the extension's manifest.json file. During the install process, the browser will check that the downloaded extension's manifest matches what was passed in here.",
-            "minLength": 1
+            "name": "details",
+            "type": "object",
+            "properties": {
+              "id": {
+                "type": "string",
+                "description": "The id of the extension to be installled.",
+                "minLength": 32,
+                "maxLength": 32
+              },
+              "manifest": {
+                "type": "string",
+                "description": "A string with the contents of the extension's manifest.json file. During the install process, the browser will check that the downloaded extension's manifest matches what was passed in here.",
+                "minLength": 1
+              },
+              "iconData": {
+                "type": "string",
+                "optional": true,
+                "description": "An icon as a base64-encoded image, displayed in a confirmation dialog."
+              },
+              "localizedName": {
+                "type": "string",
+                "optional": true,
+                "description": "A string to use instead of the raw value of the 'name' key from manifest.json."
+              },
+              "locale": {
+                "type": "string",
+                "optional": true,
+                "description": "The name of the locale used for generating localizedName. This should be the name of one of the directories in the _locales folder of the extension, or the default_locale setting from the manifest."
+              }
+            }
           },
           {
             "name": "callback",
             "type": "function",
             "description": "Called when the user has either accepted/rejected the dialog, or some error occurred (such as invalid manifest or icon image data).",
             "optional": "true",
             "parameters": [
               {
                 "name": "result",
                 "type": "string",
@@ skipping 412 matching lines @@
           {
             "type": "integer",
             "name": "tabId",
             "description": "The id of the tab that was detached."
           }
         ]
       }
     ]
   }
 ]