[jumbo] remove some using statements in cctest

This is required for jumbo builds to work before the stable jumbo chunk
algorithm[*] can reland.

[*] https://chromium-review.googlesource.com/c/chromium/src/+/1102218

Bug: chromium:856964, chromium:782863
Change-Id: Ibbe0994980eb554acd4e1557e733d07526a90608
Reviewed-on: https://chromium-review.googlesource.com/1117059Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@vewd.com>
Cr-Commit-Position: refs/heads/master@{#54070}

test/cctest/test-deoptimization.cc

@@ -42,9 +42,7 @@ using ::v8::base::OS;
 using ::v8::internal::Deoptimizer;
 using ::v8::internal::EmbeddedVector;
 using ::v8::internal::Handle;
-using ::v8::internal::Isolate;
 using ::v8::internal::JSFunction;
-using ::v8::internal::Object;
 
 // Size of temp buffer for formatting small strings.
 #define SMALL_STRING_BUFFER_SIZE 80

test/cctest/test-func-name-inference.cc

@@ -40,23 +40,19 @@ using ::v8::internal::CStrVector;
 using ::v8::internal::Factory;
 using ::v8::internal::Handle;
 using ::v8::internal::Heap;
-using ::v8::internal::Isolate;
 using ::v8::internal::JSFunction;
-using ::v8::internal::Object;
 using ::v8::internal::Runtime;
-using ::v8::internal::Script;
 using ::v8::internal::SharedFunctionInfo;
-using ::v8::internal::String;
 using ::v8::internal::Vector;
 
 
 static void CheckFunctionName(v8::Local<v8::Script> script,
                               const char* func_pos_src,
                               const char* ref_inferred_name) {
-  Isolate* isolate = CcTest::i_isolate();
+  i::Isolate* isolate = CcTest::i_isolate();
 
   // Get script source.
-  Handle<Object> obj = v8::Utils::OpenHandle(*script);
+  Handle<i::Object> obj = v8::Utils::OpenHandle(*script);
   Handle<SharedFunctionInfo> shared_function;
   if (obj->IsSharedFunctionInfo()) {
     shared_function =
@@ -65,16 +61,17 @@ static void CheckFunctionName(v8::Local<v8::Script> script,
     shared_function =
         Handle<SharedFunctionInfo>(JSFunction::cast(*obj)->shared(), isolate);
   }
-  Handle<Script> i_script(Script::cast(shared_function->script()), isolate);
+  Handle<i::Script> i_script(i::Script::cast(shared_function->script()),
+                             isolate);
   CHECK(i_script->source()->IsString());
-  Handle<String> script_src(String::cast(i_script->source()), isolate);
+  Handle<i::String> script_src(i::String::cast(i_script->source()), isolate);
 
   // Find the position of a given func source substring in the source.
   int func_pos;
   {
     i::DisallowHeapAllocation no_gc;
     Vector<const uint8_t> func_pos_str = i::OneByteVector(func_pos_src);
-    String::FlatContent script_content = script_src->GetFlatContent();
+    i::String::FlatContent script_content = script_src->GetFlatContent();
     func_pos = SearchString(isolate, script_content.ToOneByteVector(),
                             func_pos_str, 0);
   }