Replace FilePath with base::FilePath in some more top level directories.

ui/gfx/video_decode_acceleration_support_mac.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/video_decode_acceleration_support_mac.h"
 
 #include <dlfcn.h>
 
 #include "base/bind.h"
 #include "base/file_path.h"
@@ skipping 39 matching lines @@
 VDADecoderDecodeFunc g_VDADecoderDecode;
 VDADecoderFlushFunc g_VDADecoderFlush;
 VDADecoderDestroyFunc g_VDADecoderDestroy;
 
 NSString* const kFrameIdKey = @"frame_id";
 
 bool InitializeVdaApis() {
   static bool should_initialize = true;
   if (should_initialize) {
     should_initialize = false;
-    FilePath path;
+    base::FilePath path;
     if (!base::mac::GetSearchPathDirectory(
             NSLibraryDirectory, NSSystemDomainMask, &path)) {
       return false;
     }
 
     path  = path.AppendASCII("Frameworks")
                 .AppendASCII("VideoDecodeAcceleration.framework")
                 .AppendASCII("VideoDecodeAcceleration");
     base::NativeLibrary vda_library = base::LoadNativeLibrary(path, NULL);
     if (!vda_library)
@@ skipping 144 matching lines @@
                                                   OSStatus status,
                                                   int frame_id) {
   frame_ready_callbacks_[frame_id].Run(image_buffer, status);
   // Match the retain in OnFrameReadyCallback.
   if (image_buffer)
     CFRelease(image_buffer);
   frame_ready_callbacks_.erase(frame_id);
 }
 
 }  // namespace