Add FilePath to base namespace.

ui/base/resource/data_pack.h

Index: ui/base/resource/data_pack.h
diff --git a/ui/base/resource/data_pack.h b/ui/base/resource/data_pack.h
index 08947af7b80a65be76b80628c5ce427b67984dcb..40913cb978842933d33b81bc95e19ce395fa1094 100644
--- a/ui/base/resource/data_pack.h
+++ b/ui/base/resource/data_pack.h
@@ -19,9 +19,8 @@
 #include "ui/base/resource/resource_handle.h"
 #include "ui/base/ui_export.h"
 
-class FilePath;
-
 namespace base {
+class FilePath;
 class RefCountedStaticMemory;
 }
 
@@ -37,7 +36,7 @@ class UI_EXPORT DataPack : public ResourceHandle {
   virtual ~DataPack();
 
   // Load a pack file from |path|, returning false on error.
-  bool LoadFromPath(const FilePath& path);
+  bool LoadFromPath(const base::FilePath& path);
 
   // Loads a pack file from |file|, returning false on error.
   bool LoadFromFile(base::PlatformFile file);
@@ -46,7 +45,7 @@ class UI_EXPORT DataPack : public ResourceHandle {
   // text resources to be written, their encoding must already agree to the
   // |textEncodingType| specified. If no text resources are present, please
   // indicate BINARY.
-  static bool WritePack(const FilePath& path,
+  static bool WritePack(const base::FilePath& path,
                         const std::map<uint16, base::StringPiece>& resources,
                         TextEncodingType textEncodingType);