Expand all paths to be based off pdfium/ directory

This CL runs a script over the source and updates the include files to be
a full path from the pdfium/ directory.

BUG=pdfium:65
R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1707923002 .
diff --git a/fpdfsdk/src/javascript/JS_Runtime.h b/fpdfsdk/src/javascript/JS_Runtime.h
index decc553..6fc3894 100644
--- a/fpdfsdk/src/javascript/JS_Runtime.h
+++ b/fpdfsdk/src/javascript/JS_Runtime.h
@@ -11,10 +11,10 @@
 #include <utility>
 #include <vector>
 
-#include "JS_EventHandler.h"
 #include "core/include/fxcrt/fx_basic.h"
 #include "fpdfsdk/include/javascript/IJavaScript.h"
 #include "fpdfsdk/include/jsapi/fxjs_v8.h"
+#include "fpdfsdk/src/javascript/JS_EventHandler.h"
 
 class CJS_Context;