[SystemInfo API] Rewrite storage info provider using storage monitor impl

chrome/browser/storage_monitor/storage_monitor_linux.cc

Index: chrome/browser/storage_monitor/storage_monitor_linux.cc
diff --git a/chrome/browser/storage_monitor/storage_monitor_linux.cc b/chrome/browser/storage_monitor/storage_monitor_linux.cc
index 50848c20218b437d92b2e63c53d53d86b586381f..3d134fb3b9a345bed5bed25069c68d54187258b5 100644
--- a/chrome/browser/storage_monitor/storage_monitor_linux.cc
+++ b/chrome/browser/storage_monitor/storage_monitor_linux.cc
@@ -8,6 +8,7 @@
 
 #include <mntent.h>
 #include <stdio.h>
+#include <sys/vfs.h>
 
 #include <list>
 
@@ -293,6 +294,17 @@ void StorageMonitorLinux::Init() {
       new MediaTransferProtocolDeviceObserverLinux(receiver()));
 }
 
+std::vector<StorageInfo> StorageMonitorLinux::GetAllAvailableStorages() const {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  std::vector<StorageInfo> results;
+
+  for (MountMap::const_iterator it = mount_info_map_.begin();
+       it != mount_info_map_.end(); ++it)
+    results.push_back(it->second.storage_info);
+
+  return results;
+}
+
 bool StorageMonitorLinux::GetStorageInfoForPath(
     const base::FilePath& path,
     StorageInfo* device_info) const {