Add gdata content search

chrome/browser/chromeos/gdata/gdata_files.h

Index: chrome/browser/chromeos/gdata/gdata_files.h
diff --git a/chrome/browser/chromeos/gdata/gdata_files.h b/chrome/browser/chromeos/gdata/gdata_files.h
index e53102a140e14b73c00c6ccbd7921454e1172d23..c2d79f29a210f691039b177acaf90d44aea85398 100644
--- a/chrome/browser/chromeos/gdata/gdata_files.h
+++ b/chrome/browser/chromeos/gdata/gdata_files.h
@@ -138,6 +138,12 @@ class GDataEntry {
   // delta feeds.
   bool is_deleted() const { return deleted_; }
 
+  // True if the entry is not bound to any file system (i.e. doesn't have a root
+  // directory set). E.g. |fake_search_directory| below.
+  // NOTE: GDataRootDirectories will return true here, since they have
+  // themselves as root directories.
+  bool is_detached() const { return root_ == NULL; }
+
   // Returns virtual file path representing this file system entry. This path
   // corresponds to file path expected by public methods of GDataFileSyste
   // class.
@@ -496,9 +502,24 @@ class GDataRootDirectory : public GDataDirectory {
   void ToProto(GDataRootDirectoryProto* proto) const;
 
  private:
+  // Used in |FindEntryByPath| if the path that is being searched for is
+  // pointing to a search result path. The find path parameters should be

[satorux1, 2012/05/04 01:48:40]

find path parameters -> find entry parameters

+  // modified to point to the actual file system entry bound to the search
+  // result.

[satorux1, 2012/05/04 01:48:40]

this function is rather tricky. could you illustrate how this works with some
example?

+  bool ModifyFindEntryParamsIfSearchPath(
+      const FilePath& file_path,
+      std::vector<FilePath::StringType>* components,
+      GDataDirectory** current_dir,
+      FilePath* directory_path);
+
   ResourceMap resource_map_;
   CacheMap cache_map_;
 
+  // Fake directory that will be returned when searching for content search
+  // paths to make file manager happy when resolving paths. This directory
+  // should never be used for file operations or storing file entries.
+  scoped_ptr<GDataDirectory> fake_search_directory_;
+
   base::Time last_serialized_;
   int largest_changestamp_;
   size_t serialized_size_;