Rename avatarURL to iconURL in the credential manager in Blink.

Source/platform/credentialmanager/PlatformPasswordCredential.h

Index: Source/platform/credentialmanager/PlatformPasswordCredential.h
diff --git a/Source/platform/credentialmanager/PlatformPasswordCredential.h b/Source/platform/credentialmanager/PlatformPasswordCredential.h
index 2bab8e960f974037de3bc0134e357e2b8fc6b08f..643872e84b5e0a707e337f12278833c8f43620d1 100644
--- a/Source/platform/credentialmanager/PlatformPasswordCredential.h
+++ b/Source/platform/credentialmanager/PlatformPasswordCredential.h
@@ -14,7 +14,7 @@ namespace blink {
 class PLATFORM_EXPORT PlatformPasswordCredential final : public PlatformCredential {
     WTF_MAKE_NONCOPYABLE(PlatformPasswordCredential);
 public:
-    static PlatformPasswordCredential* create(const String& id, const String& password, const String& name, const KURL& avatarURL);
+    static PlatformPasswordCredential* create(const String& id, const String& password, const String& name, const KURL& iconURL);
     virtual ~PlatformPasswordCredential();
 
     const String& password() const { return m_password; }
@@ -22,7 +22,7 @@ public:
     virtual bool isPassword() override { return true; }
 
 private:
-    PlatformPasswordCredential(const String& id, const String& password, const String& name, const KURL& avatarURL);
+    PlatformPasswordCredential(const String& id, const String& password, const String& name, const KURL& iconURL);
 
     String m_password;
 };