Media Galleries: Disable write support.

chrome/browser/extensions/api/media_galleries/media_galleries_api.cc

Index: chrome/browser/extensions/api/media_galleries/media_galleries_api.cc
===================================================================
--- chrome/browser/extensions/api/media_galleries/media_galleries_api.cc	(revision 181366)
+++ chrome/browser/extensions/api/media_galleries/media_galleries_api.cc	(working copy)
@@ -143,10 +143,6 @@
       MediaGalleriesPermission::kReadPermission);
   bool has_read_permission = GetExtension()->CheckAPIPermissionWithParam(
       APIPermission::kMediaGalleries, &read_param);
-  MediaGalleriesPermission::CheckParam write_param(
-      MediaGalleriesPermission::kWritePermission);
-  bool has_write_permission = GetExtension()->CheckAPIPermissionWithParam(
-      APIPermission::kMediaGalleries, &write_param);
 
   const int child_id = rvh->GetProcess()->GetID();
   std::set<std::string> file_system_names;
@@ -185,16 +181,12 @@
     if (filesystems[i].path.empty())
       continue;
 
-    if (has_read_permission || has_write_permission) {
+    if (has_read_permission) {
       content::ChildProcessSecurityPolicy* policy =
           ChildProcessSecurityPolicy::GetInstance();
       if (!policy->CanReadFile(child_id, filesystems[i].path))
         policy->GrantReadFile(child_id, filesystems[i].path);
       policy->GrantReadFileSystem(child_id, filesystems[i].fsid);
-      if (has_write_permission) {
-        policy->GrantWriteFileSystem(child_id, filesystems[i].fsid);
-        policy->GrantCreateFileForFileSystem(child_id, filesystems[i].fsid);
-      }
     }
   }