Fix unit test style in core/{dom,editing,html}/.

Source/core/html/parser/HTMLParserThreadTest.cpp

Index: Source/core/html/parser/HTMLParserThreadTest.cpp
diff --git a/Source/core/html/parser/HTMLParserThreadTest.cpp b/Source/core/html/parser/HTMLParserThreadTest.cpp
index 6c21eab7f91dab4718aaeddf5fc3a7702a07c629..c1385bf3fe8dd8a30b4f8a222a1f787353580045 100644
--- a/Source/core/html/parser/HTMLParserThreadTest.cpp
+++ b/Source/core/html/parser/HTMLParserThreadTest.cpp
@@ -7,11 +7,9 @@
 
 #include <gtest/gtest.h>
 
-namespace {
+namespace blink {
 
-using namespace blink;
-
-TEST(HTMLParserThread, Init)
+TEST(HTMLParserThreadTest, Init)
 {
     // The harness has already run init() for us, so tear down the parser first.
     ASSERT_TRUE(HTMLParserThread::shared());
@@ -23,4 +21,4 @@ TEST(HTMLParserThread, Init)
     ASSERT_TRUE(HTMLParserThread::shared());
 }
 
-} // namespace
+} // namespace blink