Stop prompting for the file system write permission in packaged apps.

chrome/common/extensions/permissions/chrome_permission_message_provider.cc

Index: chrome/common/extensions/permissions/chrome_permission_message_provider.cc
diff --git a/chrome/common/extensions/permissions/chrome_permission_message_provider.cc b/chrome/common/extensions/permissions/chrome_permission_message_provider.cc
index c999ce066d39c25b8ad89f9589b86de2c7efd45b..26a5ae4693564a2b7aa4e46377cd583a2b66e826 100644
--- a/chrome/common/extensions/permissions/chrome_permission_message_provider.cc
+++ b/chrome/common/extensions/permissions/chrome_permission_message_provider.cc
@@ -257,14 +257,10 @@ ChromePermissionMessageProvider::GetAPIPermissionMessages(
   }
 
   // A special hack: If kFileSystemWriteDirectory would be displayed, hide
-  // kFileSystemDirectory and and kFileSystemWrite as the write directory
-  // message implies the other two.
+  // kFileSystemDirectory as the write directory message implies it.
   // TODO(sammc): Remove this. See http://crbug.com/284849.
   SuppressMessage(messages,
                   PermissionMessage::kFileSystemWriteDirectory,
-                  PermissionMessage::kFileSystemWrite);
-  SuppressMessage(messages,
-                  PermissionMessage::kFileSystemWriteDirectory,
                   PermissionMessage::kFileSystemDirectory);
   // A special hack: The warning message for declarativeWebRequest
   // permissions speaks about blocking parts of pages, which is a
@@ -335,8 +331,7 @@ bool ChromePermissionMessageProvider::IsAPIPrivilegeIncrease(
   PermissionMsgSet delta_warnings =
       base::STLSetDifference<PermissionMsgSet>(new_warnings, old_warnings);
 
-  // A special hack: kFileSystemWriteDirectory implies kFileSystemDirectory and
-  // kFileSystemWrite.
+  // A special hack: kFileSystemWriteDirectory implies kFileSystemDirectory.
   // TODO(sammc): Remove this. See http://crbug.com/284849.
   if (old_warnings.find(PermissionMessage(
           PermissionMessage::kFileSystemWriteDirectory, base::string16())) !=
@@ -344,9 +339,6 @@ bool ChromePermissionMessageProvider::IsAPIPrivilegeIncrease(
     delta_warnings.erase(
         PermissionMessage(PermissionMessage::kFileSystemDirectory,
                           base::string16()));
-    delta_warnings.erase(
-        PermissionMessage(PermissionMessage::kFileSystemWrite,
-                          base::string16()));
   }
 
   // It is a privilege increase if there are additional warnings present.