Add FilePath to base namespace.

media/filters/pipeline_integration_test_base.h

Index: media/filters/pipeline_integration_test_base.h
diff --git a/media/filters/pipeline_integration_test_base.h b/media/filters/pipeline_integration_test_base.h
index dedbb70c57a9c5aedd0a0667da4b1811667627b3..19bdda0fa30b339da1f71560bf862655f07910db 100644
--- a/media/filters/pipeline_integration_test_base.h
+++ b/media/filters/pipeline_integration_test_base.h
@@ -14,7 +14,9 @@
 #include "media/filters/video_renderer_base.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
+namespace base {
 class FilePath;
+}
 
 namespace media {
 
@@ -39,14 +41,14 @@ class PipelineIntegrationTestBase {
 
   bool WaitUntilOnEnded();
   PipelineStatus WaitUntilEndedOrError();
-  bool Start(const FilePath& file_path, PipelineStatus expected_status);
+  bool Start(const base::FilePath& file_path, PipelineStatus expected_status);
   // Enable playback with audio and video hashing enabled.  Frame dropping and
   // audio underflow will be disabled to ensure consistent hashes.
-  bool Start(const FilePath& file_path, PipelineStatus expected_status,
+  bool Start(const base::FilePath& file_path, PipelineStatus expected_status,
              bool hashing_enabled);
   // Initialize the pipeline and ignore any status updates.  Useful for testing
   // invalid audio/video clips which don't have deterministic results.
-  bool Start(const FilePath& file_path);
+  bool Start(const base::FilePath& file_path);
 
   void Play();
   void Pause();
@@ -54,7 +56,7 @@ class PipelineIntegrationTestBase {
   void Stop();
   bool WaitUntilCurrentTimeIsAfter(const base::TimeDelta& wait_time);
   scoped_ptr<FilterCollection> CreateFilterCollection(
-      const FilePath& file_path);
+      const base::FilePath& file_path);
 
   // Returns the MD5 hash of all video frames seen.  Should only be called once
   // after playback completes.  First time hashes should be generated with