Adding support to retrieve remaining and total space on disk/file shelf.

chrome/browser/extensions/extension_file_browser_private_api.cc

Index: chrome/browser/extensions/extension_file_browser_private_api.cc
diff --git a/chrome/browser/extensions/extension_file_browser_private_api.cc b/chrome/browser/extensions/extension_file_browser_private_api.cc
index 2cd65da083177b01e0b0484afcc2b369ffd44fc7..269ae6ef408cf79225a7211b8f4c0ba9b117b031 100644
--- a/chrome/browser/extensions/extension_file_browser_private_api.cc
+++ b/chrome/browser/extensions/extension_file_browser_private_api.cc
@@ -1277,6 +1277,73 @@ bool GetMountPointsFunction::RunImpl() {
   return true;
 }
 
+GetSizeStatsFunction::GetSizeStatsFunction() {
+}
+
+GetSizeStatsFunction::~GetSizeStatsFunction() {
+}
+
+#ifdef OS_CHROMEOS
+void GetSizeStatsFunction::GetSizeStatsCallback(const char* mount_path,
+    bool success, size_t total_size_kb, size_t remaining_size_kb) {
+  if (!success) {
+    SendResponse(false);
+    return;
+  }
+
+  base::DictionaryValue* sizes = new base::DictionaryValue();
+  result_.reset(sizes);
+
+  sizes->SetInteger("totalSizeKB", total_size_kb);
+  sizes->SetInteger("remainingSizeKB", remaining_size_kb);
+
+  SendResponse(true);
+
+  Release();  // Balances the AddRef taken in GetLocalPathsOnUIThread.
+}
+#endif
+
+bool GetSizeStatsFunction::RunImpl() {
+  if (args_->GetSize() != 1) {
+    return false;
+  }
+
+  std::string mount_url;
+  if (!args_->GetString(0, &mount_url)) {

[zel, 2011/09/02 21:37:34]

nit: no {}

[tonibarzic, 2011/09/02 21:59:01]

Done.

+    return false;
+  }
+
+  UrlList mount_paths;
+  mount_paths.push_back(GURL(mount_url));
+
+  BrowserThread::PostTask(
+      BrowserThread::FILE, FROM_HERE,
+      NewRunnableMethod(this,
+          &GetSizeStatsFunction::GetLocalPathsOnFileThread,
+          mount_paths, reinterpret_cast<void*>(NULL)));
+  return true;
+}
+
+void GetSizeStatsFunction::GetLocalPathsResponseOnUIThread(
+    const FilePathList& files, void* context) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  if (files.size() != 1) {
+    SendResponse(false);
+    return;
+  }
+
+#ifdef OS_CHROMEOS
+  chromeos::CrosLibrary::Get()->GetMountLibrary()->GetSizeStats(
+      files[0].value().c_str(), this /*MountLibrary::CallbackDelegate*/);
+  AddRef();  // Balanced by the Release in GetSizeStatsCallback.
+  return;
+#endif
+
+  // If we are not on ChromeOs, respond false.
+  SendResponse(false);
+}
+
 FormatDeviceFunction::FormatDeviceFunction() {
 }