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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef COMPONENTS_METRICS_GPU_GPU_METRICS_PROVIDER_H_
      6 #define COMPONENTS_METRICS_GPU_GPU_METRICS_PROVIDER_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "components/metrics/metrics_provider.h"
     10 #include "ui/gfx/size.h"
     11 
     12 namespace metrics {
     13 
     14 // GPUMetricsProvider provides GPU-related metrics.
     15 class GPUMetricsProvider : public MetricsProvider {
     16  public:
     17   GPUMetricsProvider();
     18   virtual ~GPUMetricsProvider();
     19 
     20   // MetricsProvider:
     21   virtual void ProvideSystemProfileMetrics(
     22       SystemProfileProto* system_profile_proto) OVERRIDE;
     23 
     24  protected:
     25   // Exposed for the sake of mocking in test code.
     26 
     27   // Returns the screen size for the primary monitor.
     28   virtual gfx::Size GetScreenSize() const;
     29 
     30   // Returns the device scale factor for the primary monitor.
     31   virtual float GetScreenDeviceScaleFactor() const;
     32 
     33   // Returns the number of monitors the user is using.
     34   virtual int GetScreenCount() const;
     35 
     36  private:
     37   DISALLOW_COPY_AND_ASSIGN(GPUMetricsProvider);
     38 };
     39 
     40 }  // namespace metrics
     41 
     42 #endif  // COMPONENTS_METRICS_GPU_GPU_METRICS_PROVIDER_H_
     43