Fix unit test style in Source/platform/, part 2.

Source/platform/text/BidiResolverTest.cpp

Index: Source/platform/text/BidiResolverTest.cpp
diff --git a/Source/platform/text/BidiResolverTest.cpp b/Source/platform/text/BidiResolverTest.cpp
index ca0474bf0a941a70118adad6fb67c71f6066e536..51abdaa23ba539791e9f65c388015c9651691f47 100644
--- a/Source/platform/text/BidiResolverTest.cpp
+++ b/Source/platform/text/BidiResolverTest.cpp
@@ -37,10 +37,7 @@
 #include <fstream>
 #include <gtest/gtest.h>
 
-namespace {
-
-using namespace WTF;
-using namespace blink;
+namespace blink {
 
 TEST(BidiResolver, Basic)
 {
@@ -291,4 +288,4 @@ TEST(BidiResolver, BidiTest_txt)
     EXPECT_EQ(19151u, runner.m_orderFailures);
 }
 
-}
+} // namespace blink