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..4428a8c986c37033094a37b149b5ed03afaf1b85 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

[James Simonsen, 2013/06/26 02:30:38]

FYI, there's a discrepancy between this and the one on the server side. I went
with the larger of the two. It seems a bit scary that they're out of sync
though.

[Mark P, 2013/06/26 13:23:24]

Looking at the history of the server-side file, the 15 listed there is an error.
 Please go ahead and use tag 13 (next tag 14).

(isherman@ can correct me if I mis-reading the discussions on the code review
that submitted the 15 line, which was partially to correct an earlier error and
it looks like didn't correct it entirely)

+  // Next tag for Hardware: 16
   // Information on the user's hardware.
   message Hardware {
     // The CPU architecture (x86, PowerPC, x86_64, ...)
@@ -116,6 +116,33 @@ message SystemProfileProto {
     optional float max_dpi_x = 9;
     optional float max_dpi_y = 10;
 
+    // Information on the CPU obtained by CPUID.
+    message CPU {
+      // A 12 character string naming the vendor, e.g. "GeniuneIntel".
+      optional string vendor_name = 1;
+
+      // Identifies the version within the model.
+      optional uint32 stepping = 2;
+
+      // Identifies the model within the family.
+      optional uint32 model = 3;
+
+      // Identifies processors with similar characteristics.
+      optional uint32 family = 4;
+
+      // Identifies the processor type.
+      optional uint32 type = 5;
+
+      // Additional model bits beyond the basic model. They've overflowed the
+      // original field.
+      optional uint32 extended_model = 6;
+
+      // Additional family bits beyond the basic family. They've overflowed the
+      // original field.
+      optional uint32 extended_family = 7;
+    }
+    optional CPU cpu = 15;
+
     // Information on the GPU
     message Graphics {
       // The GPU manufacturer's vendor id.