Add a centralized mechanism for whitelisting access to extension permissions.

chrome/browser/extensions/api/terminal/terminal_extension_helper.cc

 // 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.
 
 #include "chrome/browser/extensions/api/terminal/terminal_extension_helper.h"
 
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/common/extensions/extension.h"
 
 namespace {
 
-const char* kAllowedExtensionIds[] = {
-    // Keep official app first, so GetTerminalExtensionID checks it first.
-    "pnhechapfaindjhompbnflcldabbghjo",  // HTerm App
-    "okddffdblfhhnmhodogpojmfkjmhinfp",  // test SSH/Crosh Client
-};
-
-const char kExtensionSchema[] = "chrome-extension://";
 const char kCroshExtensionEntryPoint[] = "/html/crosh.html";
 
 }  // namespace
 
-// Allow component and whitelisted extensions.
-bool TerminalExtensionHelper::AllowAccessToExtension(
-    Profile* profile,
-    const std::string& extension_id) {
+GURL TerminalExtensionHelper::GetCroshExtensionURL(Profile* profile) {
   ExtensionService* service = profile->GetExtensionService();
-  const Extension* extension = service->GetExtensionById(extension_id, false);
-
+  const Extension* extension =
+      service->GetExtensionById(extension_misc::kHTermAppId, false);

[jstritar, 2012/02/01 16:09:51]

Do you ever really need to fall back to the test extension here? I didn't see
any tests that require this, so just updated it to use the HTerm app ID.

[tbarzic, 2012/02/01 18:32:44]

Yeah,we'll need to fallback occasionally; test extension is extension we use to
develop and test hterm extension before it is uploaded to the gallery

   if (!extension)
-    return false;
-
-  if (extension->location() == Extension::COMPONENT)
-    return true;
-
-  for (size_t i = 0; i < arraysize(kAllowedExtensionIds); i++) {
-    if (extension->id() == kAllowedExtensionIds[i])
-      return true;
-  }
-  return false;
-}
-
-GURL TerminalExtensionHelper::GetCroshExtensionURL(Profile* profile) {

[jstritar, 2012/02/01 16:09:51]

What does Crosh stand for? Chrome shell? Just wondering what the capitalization
should be.

[tbarzic, 2012/02/01 18:32:44]

It's chrome os shell

-  const char* extension_id = GetTerminalExtensionId(profile);
-  if (!extension_id)
     return GURL();
 
-  std::string crosh_url_str(kExtensionSchema);
-  crosh_url_str.append(extension_id);
-  crosh_url_str.append(kCroshExtensionEntryPoint);
-  return GURL(crosh_url_str);
+  return extension->GetResourceURL(kCroshExtensionEntryPoint);
 }
-
-const char* TerminalExtensionHelper::GetTerminalExtensionId(Profile* profile) {
-  ExtensionService* service = profile->GetExtensionService();
-  for (size_t i = 0; i < arraysize(kAllowedExtensionIds); i++) {
-    if (service->GetExtensionById(kAllowedExtensionIds[i], false) != 0)
-      return kAllowedExtensionIds[i];
-  }
-  return NULL;
-}