Cleanup namespace usage in Source/web/*.h

Source/web/CompositionUnderlineBuilder.h

Index: Source/web/CompositionUnderlineBuilder.h
diff --git a/Source/web/CompositionUnderlineBuilder.h b/Source/web/CompositionUnderlineBuilder.h
index a5694ae4a158660c22f7a152a30ddfbcb825034b..1b39d7a4d3d3528c2911680a6db73d66c038e899 100644
--- a/Source/web/CompositionUnderlineBuilder.h
+++ b/Source/web/CompositionUnderlineBuilder.h
@@ -38,14 +38,14 @@
 namespace blink {
 
 // This class is used for converting from WebCompositionUnderline to
-// blink::CompositionUnderline.
+// CompositionUnderline.
 
-class CompositionUnderlineBuilder : public blink::CompositionUnderline {
+class CompositionUnderlineBuilder : public CompositionUnderline {
 public:
     CompositionUnderlineBuilder(const WebCompositionUnderline& u)
-        : blink::CompositionUnderline(u.startOffset, u.endOffset,
-            blink::Color(u.color), u.thick,
-            blink::Color(u.backgroundColor)) { }
+        : CompositionUnderline(u.startOffset, u.endOffset,
+            Color(u.color), u.thick,
+            Color(u.backgroundColor)) { }
 };
 
 } // namespace blink