Create GPUMetricsProvider.

chrome/browser/metrics/gpu_metrics_provider.cc

+// 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.
+
+#include "chrome/browser/metrics/gpu_metrics_provider.h"
+
+#include "components/metrics/proto/system_profile.pb.h"
+#include "content/public/browser/gpu_data_manager.h"
+#include "gpu/config/gpu_info.h"
+#include "ui/gfx/screen.h"
+
+#if defined(OS_WIN)
+
+#include <windows.h>
+
+struct ScreenDPIInformation {
+  double max_dpi_x;
+  double max_dpi_y;
+};
+
+// Called once for each connected monitor.
+BOOL CALLBACK GetMonitorDPICallback(HMONITOR, HDC hdc, LPRECT, LPARAM dwData) {
+  const double kMillimetersPerInch = 25.4;
+  ScreenDPIInformation* screen_info =
+      reinterpret_cast<ScreenDPIInformation*>(dwData);
+  // Size of screen, in mm.
+  DWORD size_x = GetDeviceCaps(hdc, HORZSIZE);
+  DWORD size_y = GetDeviceCaps(hdc, VERTSIZE);
+  double dpi_x = (size_x > 0) ?
+      GetDeviceCaps(hdc, HORZRES) / (size_x / kMillimetersPerInch) : 0;
+  double dpi_y = (size_y > 0) ?
+      GetDeviceCaps(hdc, VERTRES) / (size_y / kMillimetersPerInch) : 0;
+  screen_info->max_dpi_x = std::max(dpi_x, screen_info->max_dpi_x);
+  screen_info->max_dpi_y = std::max(dpi_y, screen_info->max_dpi_y);
+  return TRUE;
+}
+
+void WriteScreenDPIInformationProto(SystemProfileProto::Hardware* hardware) {
+  HDC desktop_dc = GetDC(NULL);
+  if (desktop_dc) {
+    ScreenDPIInformation si = {0, 0};
+    if (EnumDisplayMonitors(desktop_dc, NULL, GetMonitorDPICallback,
+            reinterpret_cast<LPARAM>(&si))) {
+      hardware->set_max_dpi_x(si.max_dpi_x);
+      hardware->set_max_dpi_y(si.max_dpi_y);
+    }
+    ReleaseDC(GetDesktopWindow(), desktop_dc);
+  }
+}

[Ilya Sherman, 2014/05/20 14:40:27]

nit: Should this all be in an anonymous namespace?

[blundell, 2014/05/20 14:59:11]

Done.

+
+#endif  // defined(OS_WIN)
+
+GPUMetricsProvider::GPUMetricsProvider() {
+}
+
+GPUMetricsProvider::~GPUMetricsProvider() {
+}
+
+void GPUMetricsProvider::ProvideSystemProfileMetrics(
+    metrics::SystemProfileProto* system_profile_proto) {
+  metrics::SystemProfileProto::Hardware* hardware =
+      system_profile_proto->mutable_hardware();
+
+  const gpu::GPUInfo& gpu_info =
+      content::GpuDataManager::GetInstance()->GetGPUInfo();
+  metrics::SystemProfileProto::Hardware::Graphics* gpu =
+      hardware->mutable_gpu();
+  gpu->set_vendor_id(gpu_info.gpu.vendor_id);
+  gpu->set_device_id(gpu_info.gpu.device_id);
+  gpu->set_driver_version(gpu_info.driver_version);
+  gpu->set_driver_date(gpu_info.driver_date);
+  metrics::SystemProfileProto::Hardware::Graphics::PerformanceStatistics*
+      gpu_performance = gpu->mutable_performance_statistics();
+  gpu_performance->set_graphics_score(gpu_info.performance_stats.graphics);
+  gpu_performance->set_gaming_score(gpu_info.performance_stats.gaming);
+  gpu_performance->set_overall_score(gpu_info.performance_stats.overall);
+  gpu->set_gl_vendor(gpu_info.gl_vendor);
+  gpu->set_gl_renderer(gpu_info.gl_renderer);
+
+  const gfx::Size display_size = GetScreenSize();
+  hardware->set_primary_screen_width(display_size.width());
+  hardware->set_primary_screen_height(display_size.height());
+  hardware->set_primary_screen_scale_factor(GetScreenDeviceScaleFactor());
+  hardware->set_screen_count(GetScreenCount());
+
+#if defined(OS_WIN)
+  WriteScreenDPIInformationProto(hardware);
+#endif
+}
+
+gfx::Size GPUMetricsProvider::GetScreenSize() const {
+  return gfx::Screen::GetNativeScreen()->GetPrimaryDisplay().GetSizeInPixel();
+}
+
+float GPUMetricsProvider::GetScreenDeviceScaleFactor() const {
+  return gfx::Screen::GetNativeScreen()->
+      GetPrimaryDisplay().device_scale_factor();
+}
+
+int GPUMetricsProvider::GetScreenCount() const {
+  // TODO(scottmg): NativeScreen maybe wrong. http://crbug.com/133312
+  return gfx::Screen::GetNativeScreen()->GetNumDisplays();
+}