Devices: Remove MTP functions that use file paths.

components/storage_monitor/test_media_transfer_protocol_manager_linux.cc

Index: components/storage_monitor/test_media_transfer_protocol_manager_linux.cc
===================================================================
--- components/storage_monitor/test_media_transfer_protocol_manager_linux.cc	(revision 281682)
+++ components/storage_monitor/test_media_transfer_protocol_manager_linux.cc	(working copy)
@@ -41,13 +41,6 @@
   callback.Run(true);
 }
 
-void TestMediaTransferProtocolManagerLinux::ReadDirectoryByPath(
-    const std::string& storage_handle,
-    const std::string& path,
-    const ReadDirectoryCallback& callback) {
-  callback.Run(std::vector<MtpFileEntry>(), true);
-}
-
 void TestMediaTransferProtocolManagerLinux::ReadDirectoryById(
     const std::string& storage_handle,
     uint32 file_id,
@@ -55,15 +48,6 @@
   callback.Run(std::vector<MtpFileEntry>(), true);
 }
 
-void TestMediaTransferProtocolManagerLinux::ReadFileChunkByPath(
-    const std::string& storage_handle,
-    const std::string& path,
-    uint32 offset,
-    uint32 count,
-    const ReadFileCallback& callback) {
-  callback.Run(std::string(), true);
-}
-
 void TestMediaTransferProtocolManagerLinux::ReadFileChunkById(
     const std::string& storage_handle,
     uint32 file_id,
@@ -73,13 +57,6 @@
   callback.Run(std::string(), true);
 }
 
-void TestMediaTransferProtocolManagerLinux::GetFileInfoByPath(
-    const std::string& storage_handle,
-    const std::string& path,
-    const GetFileInfoCallback& callback) {
-  callback.Run(MtpFileEntry(), true);
-}
-
 void TestMediaTransferProtocolManagerLinux::GetFileInfoById(
     const std::string& storage_handle,
     uint32 file_id,