Index: chrome/browser/net/client_hints.h |
diff --git a/chrome/browser/net/client_hints.h b/chrome/browser/net/client_hints.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..42e47445dfea97b7149dc49e6bd07d8336a49ca8 |
--- /dev/null |
+++ b/chrome/browser/net/client_hints.h |
@@ -0,0 +1,44 @@ |
+// Copyright 2013 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef CHROME_BROWSER_NET_CLIENT_HINTS_H_ |
+#define CHROME_BROWSER_NET_CLIENT_HINTS_H_ |
+ |
+#include <string> |
+ |
+#include "base/memory/weak_ptr.h" |
mmenke
2013/09/25 17:37:40
nit: include basictypes.h for DISALLOW_COPY_AND_A
bengr
2013/09/25 20:04:12
Done.
|
+ |
+// ClientHints is a repository in Chrome for information used |
+// to create the Client-Hints request header. For more information, see: |
+// https://github.com/igrigorik/http-client-hints/blob/draft2/draft-grigorik-http-client-hints-01.txt |
+class ClientHints { |
+ public: |
+ static const char* kDevicePixelRatioHeader; |
+ |
+ ClientHints(); |
+ ~ClientHints(); |
+ |
+ void Init(); |
+ |
+ // Retrieves screen information for use on the IO thread. |
+ bool RetrieveScreenInfo(); |
mmenke
2013/09/25 17:37:40
Optional: Suggest "UpdateScreenInfo" to make it c
bengr
2013/09/25 20:04:12
I changed the comment slightly instead. There's al
|
+ |
+ // Returns client hints pertaining to screen information. The format is: |
+ // "dpr=x", where x is pixel ratio. Its value is the same as the value |
+ // returned by the JavaScript command window.devicePixelRatio. |
mmenke
2013/09/25 17:37:40
Comment is also incorrect.
Suggest something alon
bengr
2013/09/25 20:04:12
Done.
|
+ const std::string& GetDevicePixelRatioHeader() const; |
+ |
+ private: |
+ friend class ClientHintsTest; |
+ |
+ void UpdateScreenInfo(float device_pixel_ratio_value); |
+ |
+ std::string screen_hints_; |
+ |
+ base::WeakPtrFactory<ClientHints> weak_ptr_factory_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(ClientHints); |
+}; |
+ |
+#endif // CHROME_BROWSER_NET_CLIENT_HINTS_H_ |