Add base:: qualifiers for FilePath uses.

remoting/host/desktop_process_main.cc

Index: remoting/host/desktop_process_main.cc
diff --git a/remoting/host/desktop_process_main.cc b/remoting/host/desktop_process_main.cc
index b1a7433ed0fe19cb2720ada15f74af7d2ec75f08..0b121d3b9f9ea582c9b3904fa8e31f489c20b5e4 100644
--- a/remoting/host/desktop_process_main.cc
+++ b/remoting/host/desktop_process_main.cc
@@ -94,7 +94,7 @@ int DesktopProcessMain(int argc, char** argv) {
   // Mark the process as DPI-aware, so Windows won't scale coordinates in APIs.
   // N.B. This API exists on Vista and above.
   if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
-    FilePath path(base::GetNativeLibraryName(UTF8ToUTF16("user32")));
+    base::FilePath path(base::GetNativeLibraryName(UTF8ToUTF16("user32")));
     base::ScopedNativeLibrary user32(path);
     CHECK(user32.is_valid());