Move core/fxcrt/include to core/fxcrt

BUG=pdfium:611

Review-Url: https://codereview.chromium.org/2382723003
diff --git a/third_party/DEPS b/third_party/DEPS
index 7cc56b3..c2a3add 100644
--- a/third_party/DEPS
+++ b/third_party/DEPS
@@ -1,7 +1,7 @@
 include_rules = [
   # A lot of third_party code has been modified to use fxcrt.
-  '+core/fxcrt/include/fx_basic.h',
-  '+core/fxcrt/include/fx_coordinates.h',
-  '+core/fxcrt/include/fx_memory.h',
-  '+core/fxcrt/include/fx_system.h',
+  '+core/fxcrt/fx_basic.h',
+  '+core/fxcrt/fx_coordinates.h',
+  '+core/fxcrt/fx_memory.h',
+  '+core/fxcrt/fx_system.h',
 ]