Make DisplayInfoProvider an interface

chrome/browser/extensions/display_info_provider_impl.h

Index: chrome/browser/extensions/display_info_provider_impl.h
diff --git a/chrome/browser/extensions/display_info_provider_impl.h b/chrome/browser/extensions/display_info_provider_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..43e92ee08422440f874cd2037ffe2d7e505d5e31
--- /dev/null
+++ b/chrome/browser/extensions/display_info_provider_impl.h
@@ -0,0 +1,30 @@
+// Copyright 2014 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_EXTENSIONS_DISPLAY_INFO_PROVIDER_IMPL_H_
+#define CHROME_BROWSER_EXTENSIONS_DISPLAY_INFO_PROVIDER_IMPL_H_
+
+#include "chrome/browser/extensions/api/system_display/display_info_provider.h"
+
+namespace extensions {
+
+class DisplayInfoProviderImpl : public DisplayInfoProvider {
+ public :

[James Cook, 2014/08/15 19:58:42]

no space after "public"

+  DisplayInfoProviderImpl();
+  virtual ~DisplayInfoProviderImpl();
+
+  // DisplayInfoProvider implementation.
+  virtual bool SetInfo(const std::string& display_id,
+                       const api::system_display::DisplayProperties& info,
+                       std::string* error) OVERRIDE;
+
+ private:
+  virtual void UpdateDisplayUnitInfoForPlatform(
+      const gfx::Display& display,
+      extensions::api::system_display::DisplayUnitInfo* unit) OVERRIDE;
+};

[James Cook, 2014/08/15 19:58:42]

DISALLOW_COPY_AND_ASSIGN

+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_DISPLAY_INFO_PROVIDER_IMPL_H_