Rename WebKit namespace to blink (part 3)

content/renderer/media/crypto/key_systems_info.h

Index: content/renderer/media/crypto/key_systems_info.h
diff --git a/content/renderer/media/crypto/key_systems_info.h b/content/renderer/media/crypto/key_systems_info.h
index 086c318e25000acd2117f69f0a4595b8dde67b38..e121e82cdb649ffa91417df7023df225246a3821 100644
--- a/content/renderer/media/crypto/key_systems_info.h
+++ b/content/renderer/media/crypto/key_systems_info.h
@@ -7,7 +7,7 @@
 
 #include <string>
 
-namespace WebKit {
+namespace blink {
 class WebString;
 }
 
@@ -17,7 +17,7 @@ namespace content {
 // This function can be called frequently. Hence this function should be
 // implemented not to impact performance and does not rely on the main
 // key system map.
-std::string KeySystemNameForUMAInternal(const WebKit::WebString& key_system);
+std::string KeySystemNameForUMAInternal(const blink::WebString& key_system);
 
 }  // namespace content