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

chrome/common/extensions/permissions/permission_set_unittest.cc

Index: chrome/common/extensions/permissions/permission_set_unittest.cc
diff --git a/chrome/common/extensions/permissions/permission_set_unittest.cc b/chrome/common/extensions/permissions/permission_set_unittest.cc
index 46682540f9f37f94980ff1121e281690a45d0ca7..94cc5a17c1f8281281931d5841f97158acd3e6bd 100644
--- a/chrome/common/extensions/permissions/permission_set_unittest.cc
+++ b/chrome/common/extensions/permissions/permission_set_unittest.cc
@@ -755,6 +755,7 @@ TEST(PermissionsTest, PermissionMessages) {
   skip.insert(APIPermission::kFileSystem);
   skip.insert(APIPermission::kFileSystemProvider);
   skip.insert(APIPermission::kFileSystemRetainEntries);
+  skip.insert(APIPermission::kFileSystemWrite);
   skip.insert(APIPermission::kSocket);
   skip.insert(APIPermission::kUsbDevice);
 
@@ -785,7 +786,7 @@ TEST(PermissionsTest, FileSystemPermissionMessages) {
   PermissionMessages messages =
       PermissionMessageProvider::Get()->GetPermissionMessages(
           permissions, Manifest::TYPE_PLATFORM_APP);
-  ASSERT_EQ(2u, messages.size());
+  ASSERT_EQ(1u, messages.size());
   std::sort(messages.begin(), messages.end());
   std::set<PermissionMessage::ID> ids;
   for (PermissionMessages::const_iterator it = messages.begin();
@@ -793,7 +794,6 @@ TEST(PermissionsTest, FileSystemPermissionMessages) {
     ids.insert(it->id());
   }
   EXPECT_TRUE(ContainsKey(ids, PermissionMessage::kFileSystemDirectory));
-  EXPECT_TRUE(ContainsKey(ids, PermissionMessage::kFileSystemWrite));
 }
 
 TEST(PermissionsTest, HiddenFileSystemPermissionMessages) {
@@ -892,9 +892,9 @@ TEST(PermissionsTest, MergedFileSystemPermissionComparison) {
   EXPECT_TRUE(provider->IsPrivilegeIncrease(write_permissions,
                                             write_directory_permissions,
                                             Manifest::TYPE_PLATFORM_APP));
-  EXPECT_TRUE(provider->IsPrivilegeIncrease(directory_permissions,
-                                            write_permissions,
-                                            Manifest::TYPE_PLATFORM_APP));
+  EXPECT_FALSE(provider->IsPrivilegeIncrease(directory_permissions,
+                                             write_permissions,
+                                             Manifest::TYPE_PLATFORM_APP));
   EXPECT_TRUE(provider->IsPrivilegeIncrease(directory_permissions,
                                             write_directory_permissions,
                                             Manifest::TYPE_PLATFORM_APP));