Expose GPU information to Telemetry.

tools/telemetry/telemetry/core/gpu_device.py

Index: tools/telemetry/telemetry/core/gpu_device.py
diff --git a/tools/telemetry/telemetry/core/gpu_device.py b/tools/telemetry/telemetry/core/gpu_device.py
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+++ b/tools/telemetry/telemetry/core/gpu_device.py
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+# Copyright (c) 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.
+
+class GPUDevice(object):
+  """Provides information about an individual GPU device.
+
+     On platforms which support them, the vendor_id and device_id are
+     PCI IDs. On other platforms, the vendor_string and device_string
+     are platform-dependent strings.
+  """
+
+  def __init__(self, vendor_id, device_id, vendor_string, device_string):
+    self._vendor_id = vendor_id
+    self._device_id = device_id
+    self._vendor_string = vendor_string
+    self._device_string = device_string
+
+  @classmethod
+  def FromDict(cls, attrs):
+    """Constructs a GPUDevice from a dictionary. Requires the
+       following attributes to be present in the dictionary:
+
+         vendor_id
+         device_id
+         vendor_string
+         device_string
+
+       Raises an exception if any attributes are missing.
+    """
+    return cls(attrs["vendor_id"], attrs["device_id"],
+               attrs["vendor_string"], attrs["device_string"])
+
+  @property
+  def vendor_id(self):
+    """The GPU vendor's PCI ID as a number, or 0 if not available.
+
+       Most desktop machines supply this information rather than the
+       vendor and device strings."""
+    return self._vendor_id
+
+  @property
+  def device_id(self):
+    """The GPU device's PCI ID as a number, or 0 if not available.
+
+       Most desktop machines supply this information rather than the
+       vendor and device strings."""
+    return self._device_id
+
+  @property
+  def vendor_string(self):
+    """The GPU vendor's name as a string, or the empty string if not
+       available.
+
+       Most mobile devices supply this information rather than the PCI
+       IDs."""
+    return self._vendor_string
+
+  @property
+  def device_string(self):
+    """The GPU device's name as a string, or the empty string if not
+       available.
+
+       Most mobile devices supply this information rather than the PCI
+       IDs."""
+    return self._device_string