Include CPU information in UMA system profile.

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 d46e58ebe24966da44f3a0d393acb491ab250c93..d8eb1af31c95bf0acad4c189e99d3562b492fe19 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, ...)
@@ -116,6 +116,18 @@ message SystemProfileProto {
     optional float max_dpi_x = 9;
     optional float max_dpi_y = 10;
 
+    // Information on the CPU obtained by CPUID.
+    message CPU {
+      optional string vendor_name = 1;
+      optional uint32 stepping = 2;
+      optional uint32 model = 3;
+      optional uint32 family = 4;
+      optional uint32 type = 5;
+      optional uint32 extended_model = 6;
+      optional uint32 extended_family = 7;

[Ilya Sherman, 2013/06/26 00:43:01]

Please document each of these fields.

+    }
+    optional CPU cpu = 13;
+
     // Information on the GPU
     message Graphics {
       // The GPU manufacturer's vendor id.