Rename IJS_Context to IJS_EventContext.

Prevents confusion with v8::Context, which is wrapped by a
different IJS_ class.

Change-Id: Iff75809e65015c0f810294de1f0d8ecf963150a3
Reviewed-on: https://pdfium-review.googlesource.com/2751
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
diff --git a/fpdfsdk/javascript/JS_Object.h b/fpdfsdk/javascript/JS_Object.h
index 658a5e2..2e5c75c 100644
--- a/fpdfsdk/javascript/JS_Object.h
+++ b/fpdfsdk/javascript/JS_Object.h
@@ -14,7 +14,7 @@
 #include "fpdfsdk/javascript/cjs_runtime.h"
 #include "fxjs/fxjs_v8.h"
 
-class CJS_Context;
+class CJS_EventContext;
 class CJS_Object;
 class CPDFSDK_FormFillEnvironment;