Make calls to AtomicString(const String&) explicit in loader/ and fetch/

Source/platform/weborigin/SecurityOrigin.h

Index: Source/platform/weborigin/SecurityOrigin.h
diff --git a/Source/platform/weborigin/SecurityOrigin.h b/Source/platform/weborigin/SecurityOrigin.h
index f3db0976b27ecd302f94cc4c0528fad9aa6f47a4..f64029c15201329607e4336bfbe65460fe164391 100644
--- a/Source/platform/weborigin/SecurityOrigin.h
+++ b/Source/platform/weborigin/SecurityOrigin.h
@@ -178,10 +178,12 @@ public:
     // SecurityOrigin might be empty, or we might have explicitly decided that
     // we shouldTreatURLSchemeAsNoAccess.
     String toString() const;
+    AtomicString toAtomicString() const;
 
     // Similar to toString(), but does not take into account any factors that
     // could make the string return "null".
     String toRawString() const;
+    AtomicString toRawAtomicString() const;
 
     // This method checks for equality between SecurityOrigins, not whether
     // one origin can access another. It is used for hash table keys.
@@ -205,6 +207,7 @@ private:
 
     // FIXME: Rename this function to something more semantic.
     bool passesFileCheck(const SecurityOrigin*) const;
+    void buildRawString(StringBuilder&) const;
 
     String m_protocol;
     String m_host;