Rename FilePath -> base::FilePath in various toplevel directories

cc/test/pixel_test_utils.h

Index: cc/test/pixel_test_utils.h
diff --git a/cc/test/pixel_test_utils.h b/cc/test/pixel_test_utils.h
index 3fa990d6687b6cd6caa554ee9298077e93dac916..5f8db47820175a78ddd5d08a6493cf258380d234 100644
--- a/cc/test/pixel_test_utils.h
+++ b/cc/test/pixel_test_utils.h
@@ -13,15 +13,15 @@ namespace cc {
 
 // Encodes a bitmap into a PNG and write to disk. Returns true on success. The
 // parent directory does not have to exist.
-bool WritePNGFile(const SkBitmap& bitmap, const FilePath& file_path);
+bool WritePNGFile(const SkBitmap& bitmap, const base::FilePath& file_path);
 
 // Reads and decodes a PNG image to a bitmap. Returns true on success. The PNG
 // should have been encoded using |gfx::PNGCodec::Encode|.
-bool ReadPNGFile(const FilePath& file_path, SkBitmap* bitmap);
+bool ReadPNGFile(const base::FilePath& file_path, SkBitmap* bitmap);
 
 // Compares with a PNG file on disk, and returns true if it is the same as
 // the given image. |ref_img_path| is absolute.
-bool IsSameAsPNGFile(const SkBitmap& gen_bmp, FilePath ref_img_path);
+bool IsSameAsPNGFile(const SkBitmap& gen_bmp, base::FilePath ref_img_path);
 
 }  // namespace cc