Declare providing extension capabilities in the manifest.

chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc

Index: chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc
diff --git a/chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc b/chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc
index ba1f7570f6f07b09fa0b0f524044da0dde6f7e58..fc3fca6ceed61a8c8ed70977743fb7a28ab61243 100644
--- a/chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc
+++ b/chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc
@@ -491,8 +491,19 @@ FileManagerPrivateGetProvidingExtensionsFunction::Run() {
         new ProvidingExtension);
     providing_extension->extension_id = info.extension_id;
     providing_extension->name = info.name;
-    providing_extension->can_configure = info.can_configure;
-    providing_extension->can_add = info.can_add;
+    providing_extension->configurable = info.capabilities.configurable();
+    providing_extension->multiple_mounts = info.capabilities.multiple_mounts();
+    switch (info.capabilities.source()) {

[not at google - send to devlin, 2015/04/24 17:49:30]

providing_extension->source and info.capabilities.source are now the same type
right, so you can directly assign them?

[mtomasz, 2015/05/07 03:33:59]

They are not the same. I convert the generated type to a custom enum. I usually
try to avoid using generated types for more than parsing.

+      case SOURCE_FILE:
+        providing_extension->source = api::file_system_provider::SOURCE_FILE;
+        break;
+      case SOURCE_DEVICE:
+        providing_extension->source = api::file_system_provider::SOURCE_DEVICE;
+        break;
+      case SOURCE_NETWORK:
+        providing_extension->source = api::file_system_provider::SOURCE_NETWORK;
+        break;
+    }
     providing_extensions.push_back(providing_extension);
   }
 
@@ -538,7 +549,6 @@ FileManagerPrivateConfigureProvidedFileSystemFunction::Run() {
   using file_manager::Volume;
   VolumeManager* const volume_manager =
       VolumeManager::Get(chrome_details_.GetProfile());
-  LOG(ERROR) << "LOOKING FOR: " << params->volume_id;
   base::WeakPtr<Volume> volume =
       volume_manager->FindVolumeById(params->volume_id);
   if (!volume.get())