Bluetooth: gather usage metrics

chrome/common/metrics/proto/system_profile.proto

Index: chrome/common/metrics/proto/system_profile.proto
diff --git a/chrome/common/metrics/proto/system_profile.proto b/chrome/common/metrics/proto/system_profile.proto
index 38cbc14b054c6bb008d9f039f0e5b421ebbf502a..1894578a6efaaa126f561d51b91e106dc1bfb9a9 100644
--- a/chrome/common/metrics/proto/system_profile.proto
+++ b/chrome/common/metrics/proto/system_profile.proto
@@ -78,7 +78,7 @@ message SystemProfileProto {
   }
   optional OS os = 5;
 
-  // Next tag for Hardware: 13
+  // Next tag for Hardware: 14
   // Information on the user's hardware.
   message Hardware {
     // The CPU architecture (x86, PowerPC, x86_64, ...)
@@ -139,16 +139,71 @@ message SystemProfileProto {
         optional float overall_score = 3;
       }
       optional PerformanceStatistics performance_statistics = 5;
-      
-      // The GL_VENDOR string. An example of a gl_vendor string is 
+
+      // The GL_VENDOR string. An example of a gl_vendor string is
       // "Imagination Technologies". "" if we are not using OpenGL.
       optional string gl_vendor = 6;
-      
-      // The GL_RENDERER string. An example of a gl_renderer string is 
+
+      // The GL_RENDERER string. An example of a gl_renderer string is
       // "PowerVR SGX 540". "" if we are not using OpenGL.
       optional string gl_renderer = 7;
     }
     optional Graphics gpu = 8;
+
+    // Information about Bluetooth devices paired with the system.
+    message Bluetooth {
+      // Whether Bluetooth is present on this system.
+      optional bool is_present = 1;
+
+      // Whether Bluetooth is enabled on this system.
+      optional bool is_enabled = 2;
+
+      // Describes a paired device.
+      message PairedDevice {
+        // Assigned class of the device. This is a bitfield according to the
+        // Bluetooth specification available at the following URL:
+        // https://www.bluetooth.org/en-us/specification/assigned-numbers-overview/baseband
+        optional uint32 bluetooth_class = 1;
+
+        // Decoded device type.
+        enum Type {
+          DEVICE_UNKNOWN = 0;
+          DEVICE_COMPUTER = 1;
+          DEVICE_PHONE = 2;
+          DEVICE_MODEM = 3;
+          DEVICE_AUDIO = 4;
+          DEVICE_CAR_AUDIO = 5;
+          DEVICE_VIDEO = 6;
+          DEVICE_PERIPHERAL = 7;
+          DEVICE_JOYSTICK = 8;
+          DEVICE_GAMEPAD = 9;
+          DEVICE_KEYBOARD = 10;
+          DEVICE_MOUSE = 11;
+          DEVICE_TABLET = 12;
+          DEVICE_KEYBOARD_MOUSE_COMBO = 13;
+        }
+        optional Type type = 2;
+
+        // Vendor prefix of the Bluetooth address, these are OUI registered by
+        // the IEEE and are encoded with the first byte in bits 16-23, the
+        // second byte in bits 8-15 and the third byte in bits 0-7.
+        //
+        // ie. Google's OUI (00:1A:11) is encoded as 0x00001A11
+        optional uint32 vendor_prefix = 4;
+
+        // Vendor ID of the device, where available.
+        optional uint32 vendor_id = 5;
+
+        // Product ID of the device, where available.
+        optional uint32 product_id = 6;
+
+        // Device ID of the device, generally the release or version number in
+        // BCD format, where available.
+        optional uint32 device_id = 7;
+      }
+      repeated PairedDevice paired_device = 3;
+    }
+    optional Bluetooth bluetooth = 13;
   }
   optional Hardware hardware = 6;