Extract MonitorInfoProvider from WindowSizer.

chrome/browser/ui/monitor_info_provider.h

Index: chrome/browser/ui/monitor_info_provider.h
diff --git a/chrome/browser/ui/monitor_info_provider.h b/chrome/browser/ui/monitor_info_provider.h
new file mode 100644
index 0000000000000000000000000000000000000000..f28d5c021fafc4e1fe25a954550c420a2bd71df0
--- /dev/null
+++ b/chrome/browser/ui/monitor_info_provider.h
@@ -0,0 +1,59 @@
+// Copyright (c) 2011 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_UI_MONITOR_INFO_PROVIDER_H_
+#define CHROME_BROWSER_UI_MONITOR_INFO_PROVIDER_H_
+#pragma once
+
+#include <stddef.h>
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "ui/gfx/rect.h"
+
+// An interface implemented by an object that can retrieve information about
+// the monitors on the system.
+class MonitorInfoProvider {

[Ben Goodger (Google), 2011/12/02 17:10:32]

So, I actually think we can get rid of this class completely. It is mostly
redundant with gfx::Screen (ui/gfx/screen). Those areas where it's not, are
either unused or should just be merged onto gfx::Screen.

[tfarina, 2011/12/02 17:24:43]

This is crbug.com/101507

+ public:
+  // Creates an appropriate MonitorInfoProvider for the platform.
+  // The returned object is owned by the caller.
+  static MonitorInfoProvider* Create();
+
+  MonitorInfoProvider();
+  virtual ~MonitorInfoProvider();
+
+  // Returns the bounds of the work area of the primary monitor.
+  virtual gfx::Rect GetPrimaryMonitorWorkArea() const = 0;
+
+  // Returns the bounds of the primary monitor.
+  virtual gfx::Rect GetPrimaryMonitorBounds() const = 0;
+
+  // Returns the bounds of the work area of the monitor that most closely
+  // intersects the provided bounds.
+  virtual gfx::Rect GetMonitorWorkAreaMatching(
+      const gfx::Rect& match_rect) const = 0;
+
+  // Ensures number and coordinates of work areas are up-to-date.  You must
+  // call this before calling either of the below functions, as work areas can
+  // change while the program is running.
+  virtual void UpdateWorkAreas() = 0;

[Ben Goodger (Google), 2011/12/02 17:10:32]

As far as I can tell, this function is never called.

[tfarina, 2011/12/02 17:24:43]

Removed.

+
+  // Returns the number of monitors on the system.
+  size_t GetMonitorCount() const { return work_areas_.size(); }

[Ben Goodger (Google), 2011/12/02 17:10:32]

This function is only called from a function in WindowSizer that is unused.

[tfarina, 2011/12/02 17:24:43]

Removed.

+
+  // Returns the bounds of the work area of the monitor at the specified
+  // index.
+  gfx::Rect GetWorkAreaAt(size_t index) const {

[Ben Goodger (Google), 2011/12/02 17:10:32]

This function is only called from a function in WindowSizer that is unused.

[tfarina, 2011/12/02 17:24:43]

Removed.

+    return work_areas_[index];
+  }
+
+ protected:
+  std::vector<gfx::Rect> work_areas_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MonitorInfoProvider);
+};
+
+#endif  // CHROME_BROWSER_UI_MONITOR_INFO_PROVIDER_H_