Rename WebCore namespace to blink in bindings and web

Source/web/WebDocument.cpp

Index: Source/web/WebDocument.cpp
diff --git a/Source/web/WebDocument.cpp b/Source/web/WebDocument.cpp
index 5a106e3b2f726dc5c30c44f34b1a803cc3d5f32d..d0b9127038483670a7d083092589b1f46f303167 100644
--- a/Source/web/WebDocument.cpp
+++ b/Source/web/WebDocument.cpp
@@ -66,7 +66,7 @@
 #include "wtf/PassRefPtr.h"
 #include <v8.h>
 
-using namespace WebCore;
+using namespace blink;
 
 namespace blink {
 
@@ -287,7 +287,7 @@ WebVector<WebDraggableRegion> WebDocument::draggableRegions() const
         for (size_t i = 0; i < regions.size(); i++) {
             const AnnotatedRegionValue& value = regions[i];
             draggableRegions[i].draggable = value.draggable;
-            draggableRegions[i].bounds = WebCore::IntRect(value.bounds);
+            draggableRegions[i].bounds = blink::IntRect(value.bounds);
         }
     }
     return draggableRegions;