Cleanup namespace usage in Source/web/.

Source/web/tests/MHTMLTest.cpp

Index: Source/web/tests/MHTMLTest.cpp
diff --git a/Source/web/tests/MHTMLTest.cpp b/Source/web/tests/MHTMLTest.cpp
index 445edb8c7ec4dac35db09ade56603006589ef782..81b72a1fb56a77191678dc687fdded84117bbd5d 100644
--- a/Source/web/tests/MHTMLTest.cpp
+++ b/Source/web/tests/MHTMLTest.cpp
@@ -46,18 +46,13 @@
 #include "public/web/WebFrame.h"
 #include "public/web/WebView.h"
 #include "web/tests/FrameTestHelpers.h"
-
 #include <gtest/gtest.h>
 
-using namespace blink;
-using blink::Document;
-using blink::LocalFrame;
-using blink::Page;
-using blink::KURL;
-using blink::URLTestHelpers::toKURL;
-
 namespace {
 
+using blink::URLTestHelpers::toKURL;
+using namespace blink;
+
 class MHTMLTest : public testing::Test {
 public:
     MHTMLTest()
@@ -109,7 +104,7 @@ TEST_F(MHTMLTest, CheckDomain)
 
     EXPECT_STREQ(kFileURL, frame->domWindow()->location().href().ascii().data());
 
-    blink::SecurityOrigin* origin = document->securityOrigin();
+    SecurityOrigin* origin = document->securityOrigin();
     EXPECT_STRNE("localhost", origin->domain().ascii().data());
 }