Cleanup namespace usage in Source/web/Web*.h

Source/web/WebHelperPluginImpl.h

Index: Source/web/WebHelperPluginImpl.h
diff --git a/Source/web/WebHelperPluginImpl.h b/Source/web/WebHelperPluginImpl.h
index 8e98d3919ddcfa1fa82432f16182beb8476027ad..19eb82fd3b08ffe64291b6bc4db5b3f4259dd0be 100644
--- a/Source/web/WebHelperPluginImpl.h
+++ b/Source/web/WebHelperPluginImpl.h
@@ -40,11 +40,8 @@
 #include "wtf/text/WTFString.h"
 
 namespace blink {
-class HTMLObjectElement;
-} // namespace blink
-
-namespace blink {
 
+class HTMLObjectElement;
 class WebLocalFrameImpl;
 class WebPluginContainerImpl;
 
@@ -66,10 +63,10 @@ private:
     virtual ~WebHelperPluginImpl();
 
     bool initialize(const String& pluginType, WebLocalFrameImpl*);
-    void reallyDestroy(blink::Timer<WebHelperPluginImpl>*);
+    void reallyDestroy(Timer<WebHelperPluginImpl>*);
 
-    blink::Timer<WebHelperPluginImpl> m_destructionTimer;
-    RefPtrWillBePersistent<blink::HTMLObjectElement> m_objectElement;
+    Timer<WebHelperPluginImpl> m_destructionTimer;
+    RefPtrWillBePersistent<HTMLObjectElement> m_objectElement;
     RefPtr<WebPluginContainerImpl> m_pluginContainer;
 };