Cleanup namespace usage in Source/web/.

Source/web/tests/ActivityLoggerTest.cpp

Index: Source/web/tests/ActivityLoggerTest.cpp
diff --git a/Source/web/tests/ActivityLoggerTest.cpp b/Source/web/tests/ActivityLoggerTest.cpp
index 8a21d1c383638527b921fb540ab5edd82740413e..d3987511b80097c223202a96d0ae215d0c498bd8 100644
--- a/Source/web/tests/ActivityLoggerTest.cpp
+++ b/Source/web/tests/ActivityLoggerTest.cpp
@@ -13,14 +13,11 @@
 #include <gtest/gtest.h>
 #include <v8.h>
 
-using blink::ScriptController;
-using blink::ScriptSourceCode;
-using blink::V8DOMActivityLogger;
-using blink::toCoreStringWithUndefinedOrNullCheck;
+namespace {
+
 using blink::FrameTestHelpers::WebViewHelper;
 using blink::FrameTestHelpers::pumpPendingRequestsDoNotUse;
-
-namespace {
+using namespace blink;
 
 class TestActivityLogger : public V8DOMActivityLogger {
 public: