Fix unit test style in Source/platform/, part 1.

Source/platform/fonts/GlyphBufferTest.cpp

Index: Source/platform/fonts/GlyphBufferTest.cpp
diff --git a/Source/platform/fonts/GlyphBufferTest.cpp b/Source/platform/fonts/GlyphBufferTest.cpp
index 44297b1ae6f0e6c2d314d69f7bcfd94d20f10196..fa3a49ebb2ab133ba19b67bc39754c6279a07f1a 100644
--- a/Source/platform/fonts/GlyphBufferTest.cpp
+++ b/Source/platform/fonts/GlyphBufferTest.cpp
@@ -10,7 +10,7 @@
 #include "wtf/RefPtr.h"
 #include <gtest/gtest.h>
 
-using namespace blink;
+namespace blink {
 
 namespace {
 
@@ -32,6 +32,8 @@ private:
     }
 };
 
+} // anonymous namespace
+
 TEST(GlyphBufferTest, StartsEmpty)
 {
     GlyphBuffer glyphBuffer;
@@ -221,4 +223,4 @@ TEST(GlyphBufferTest, ReverseForSimpleRTL)
     EXPECT_EQ(85, glyphBuffer.xOffsetAt(2));
 }
 
-} // namespace
+} // namespace blink