Add support for almost-recursive watches in Linux DirectoryWatcher

base/file_util_posix.cc

Index: base/file_util_posix.cc
diff --git a/base/file_util_posix.cc b/base/file_util_posix.cc
index ae296cac95b96d4be2f0cea1f2f3e1ef8db84ece..96c1c177644222cac97e0dda6e65248b02f3044a 100644
--- a/base/file_util_posix.cc
+++ b/base/file_util_posix.cc
@@ -440,6 +440,16 @@ bool GetFileInfo(const FilePath& file_path, FileInfo* results) {
   return true;
 }
 
+bool GetInode(const FilePath& path, ino_t* inode) {
+  struct stat buffer;
+  int result = stat(path.value().c_str(), &buffer);
+  if (result < 0)
+    return false;
+
+  *inode = buffer.st_ino;
+  return true;
+}
+
 FILE* OpenFile(const std::string& filename, const char* mode) {
   return OpenFile(FilePath(filename), mode);
 }