drive: Remove FileCacheObserver::OnCacheCommitted

FileCacheObserver::CommitDirty does nothing but notifying cache observers about OnCacheComitted event whose only user is SyncClient.
We should abandon this complexity by simply calling SyncClient methods from FileSystem.

Remove FileCacheObserver::OnCacheCommitted
Remove FileCache::CommitDirtyOnUIThread and StoreLocallyModifiedOnUIThread
Rename SyncClient methods.
Call SyncClient methods from FileSystem directly.
Add OperationObserver::OnCacheFileUploadNeededByOperation to trigger upload from CopyOperation.

BUG=247274
TEST=unit_tests

Review URL: https://chromiumcodereview.appspot.com/16628003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@205568 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/chromeos/drive/file_cache.h b/chrome/browser/chromeos/drive/file_cache.h
index 2c169a2..0c6d5e9 100644
--- a/chrome/browser/chromeos/drive/file_cache.h
+++ b/chrome/browser/chromeos/drive/file_cache.h
@@ -198,16 +198,6 @@
                   const base::FilePath& source_path,
                   FileOperationType file_operation_type);
 
-  // Stores |source_path| to the cache and mark it as dirty, i.e., needs to be
-  // uploaded to the remove server for syncing.
-  // |callback| must not be null.
-  // Must be called on the UI thread.
-  void StoreLocallyModifiedOnUIThread(const std::string& resource_id,
-                                      const std::string& md5,
-                                      const base::FilePath& source_path,
-                                      FileOperationType file_operation_type,
-                                      const FileOperationCallback& callback);
-
   // Runs Pin() on |blocking_task_runner_|, and calls |callback| with the result
   // asynchronously.
   // |callback| must not be null.
@@ -256,13 +246,6 @@
   FileError MarkDirty(const std::string& resource_id,
                       const std::string& md5);
 
-  // Commits changes for the specified dirty entry.
-  // |callback| must not be null.
-  // Must be called on the UI thread.
-  void CommitDirtyOnUIThread(const std::string& resource_id,
-                             const std::string& md5,
-                             const FileOperationCallback& callback);
-
   // Clears dirty state of the specified entry.
   FileError ClearDirty(const std::string& resource_id,
                        const std::string& md5);
@@ -348,8 +331,7 @@
   FileError StoreInternal(const std::string& resource_id,
                           const std::string& md5,
                           const base::FilePath& source_path,
-                          FileOperationType file_operation_type,
-                          CachedFileOrigin origin);
+                          FileOperationType file_operation_type);
 
   // Used to implement MarkAsMountedOnUIThread.
   FileError MarkAsMounted(const std::string& resource_id,
@@ -373,11 +355,6 @@
                   const FileOperationCallback& callback,
                   FileError error);
 
-  // Runs callback and notifies the observers when file is committed.
-  void OnCommitDirty(const std::string& resource_id,
-                     const FileOperationCallback& callback,
-                     FileError error);
-
   // Returns true if we have sufficient space to store the given number of
   // bytes, while keeping kMinFreeSpace bytes on the disk.
   bool HasEnoughSpaceFor(int64 num_bytes, const base::FilePath& path);