Fix all the code which has duplicate variable declarations

fpdfsdk/jsapi/fxjs_v8_embeddertest.cpp

Index: fpdfsdk/jsapi/fxjs_v8_embeddertest.cpp
diff --git a/fpdfsdk/jsapi/fxjs_v8_embeddertest.cpp b/fpdfsdk/jsapi/fxjs_v8_embeddertest.cpp
index 161487f356f89255048c88801858c5f8c6921050..a8358c4ee9c5a4806b7d379bf033a5cb2d840973 100644
--- a/fpdfsdk/jsapi/fxjs_v8_embeddertest.cpp
+++ b/fpdfsdk/jsapi/fxjs_v8_embeddertest.cpp
@@ -64,7 +64,7 @@ TEST_F(FXJSV8EmbedderTest, MultipleRutimes) {
   {
     v8::Local<v8::Context> context1 =
         v8::Local<v8::Context>::New(isolate(), global_context1);
-    v8::Context::Scope context_scope(context1);
+    v8::Context::Scope context_scope1(context1);
     ExecuteInCurrentContext(kScript1);
     CheckAssignmentInCurrentContext(kExpected1);
   }
@@ -73,7 +73,7 @@ TEST_F(FXJSV8EmbedderTest, MultipleRutimes) {
   {
     v8::Local<v8::Context> context2 =
         v8::Local<v8::Context>::New(isolate(), global_context2);
-    v8::Context::Scope context_scope(context2);
+    v8::Context::Scope context_scope2(context2);
     ExecuteInCurrentContext(kScript2);
     CheckAssignmentInCurrentContext(kExpected2);
   }