Implement initialization for GDataCache to use in-memory metadata for tests.

chrome/browser/chromeos/gdata/gdata_cache_metadata.h

Index: chrome/browser/chromeos/gdata/gdata_cache_metadata.h
diff --git a/chrome/browser/chromeos/gdata/gdata_cache_metadata.h b/chrome/browser/chromeos/gdata/gdata_cache_metadata.h
index d6bebd516716b2ec5a52dbe65ac710e1949ac9e5..2d3646186699fbf0025f523e10a92130eadc963c 100644
--- a/chrome/browser/chromeos/gdata/gdata_cache_metadata.h
+++ b/chrome/browser/chromeos/gdata/gdata_cache_metadata.h
@@ -39,6 +39,9 @@ class GDataCacheMetadata {
   static scoped_ptr<GDataCacheMetadata> CreateGDataCacheMetadata(
       base::SequencedTaskRunner* blocking_task_runner);
 
+  static scoped_ptr<GDataCacheMetadata> CreateGDataCacheMetadataForTesting(

[achuithb, 2012/08/08 05:07:31]

Add a function comment please.

[Haruki Sato, 2012/08/08 05:57:38]

Done.
Thanks!

+      base::SequencedTaskRunner* blocking_task_runner);
+
   // Initialize the cache metadata store.
   virtual void Initialize(const std::vector<FilePath>& cache_paths) = 0;
   // Adds a new cache entry corresponding to |resource_id| if it doesn't