Cache User Agent string in BlinkPlatformImpl

third_party/WebKit/Source/web/FrameLoaderClientImpl.h

Index: third_party/WebKit/Source/web/FrameLoaderClientImpl.h
diff --git a/third_party/WebKit/Source/web/FrameLoaderClientImpl.h b/third_party/WebKit/Source/web/FrameLoaderClientImpl.h
index d0b498f7560237c9d2116ffcc48977c335a67cd2..13d24e64bec85fca87c2cc9aadd7d3a3e16499cb 100644
--- a/third_party/WebKit/Source/web/FrameLoaderClientImpl.h
+++ b/third_party/WebKit/Source/web/FrameLoaderClientImpl.h
@@ -185,6 +185,8 @@ private:
     // The WebFrame that owns this object and manages its lifetime. Therefore,
     // the web frame object is guaranteed to exist.
     RawPtrWillBeMember<WebLocalFrameImpl> m_webFrame;
+
+    WebString m_userAgent;

[kinuko, 2015/10/16 11:12:21]

nit: let's just use String in non-Web / boundary classes

[tzik, 2015/10/19 08:16:48]

Acknowledged.

I moved to this to FrameLoader and changed its type to String.

 };
 
 DEFINE_TYPE_CASTS(FrameLoaderClientImpl, FrameLoaderClient, client, client->isFrameLoaderClientImpl(), client.isFrameLoaderClientImpl());