Cleanup namespace usage in public/platform/{Web[P-W]*,linux/*}.h

public/platform/WebRect.h

Index: public/platform/WebRect.h
diff --git a/public/platform/WebRect.h b/public/platform/WebRect.h
index 47a15f8e49ec8818c57910e9e2e51621d8c0afbb..107c0b57e4b06698e4e0bbaab825253d18673e08 100644
--- a/public/platform/WebRect.h
+++ b/public/platform/WebRect.h
@@ -68,7 +68,7 @@ struct WebRect {
     }
 
 #if INSIDE_BLINK
-    WebRect(const blink::IntRect& r)
+    WebRect(const IntRect& r)
         : x(r.x())
         , y(r.y())
         , width(r.width())
@@ -76,7 +76,7 @@ struct WebRect {
     {
     }
 
-    WebRect& operator=(const blink::IntRect& r)
+    WebRect& operator=(const IntRect& r)
     {
         x = r.x();
         y = r.y();
@@ -85,9 +85,9 @@ struct WebRect {
         return *this;
     }
 
-    operator blink::IntRect() const
+    operator IntRect() const
     {
-        return blink::IntRect(x, y, width, height);
+        return IntRect(x, y, width, height);
     }
 #else
     WebRect(const gfx::Rect& r)