Report Android Build.MODEL in SystemProfileProto hardware_class.

base/sys_info_android.cc

Index: base/sys_info_android.cc
diff --git a/base/sys_info_android.cc b/base/sys_info_android.cc
index 245097ffdc092626923e8bcb2f1bbf99e08e51d6..cb825ce0b81505775f80831339b076140c02675f 100644
--- a/base/sys_info_android.cc
+++ b/base/sys_info_android.cc
@@ -177,6 +177,10 @@ std::string SysInfo::GetDeviceName() {
   return std::string(device_model_str);
 }
 
+std::string SysInfo::HardwareModelName() {
+  return GetDeviceName();
+}
+
 std::string SysInfo::OperatingSystemVersion() {
   int32 major, minor, bugfix;
   OperatingSystemVersionNumbers(&major, &minor, &bugfix);