Add support for Blimp engine metrics reporting in development.

components/metrics/metrics_log.cc

 // Copyright 2014 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.
 
 #include "components/metrics/metrics_log.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 307 matching lines @@
   // HardwareModelName() will return an empty string on platforms where it's
   // not implemented or if an error occured.
   hardware->set_hardware_class(base::SysInfo::HardwareModelName());
 
   hardware->set_cpu_architecture(base::SysInfo::OperatingSystemArchitecture());
   hardware->set_system_ram_mb(base::SysInfo::AmountOfPhysicalMemoryMB());
 #if defined(OS_WIN)
   hardware->set_dll_base(reinterpret_cast<uint64_t>(&__ImageBase));
 #endif
 
+#if defined(OVERRIDE_OS_NAME_TO_BLIMP)
+  os->set_name("Blimp");
+#else
   SystemProfileProto::OS* os = system_profile->mutable_os();
   std::string os_name = base::SysInfo::OperatingSystemName();
   os->set_name(os_name);
+#endif
+
   os->set_version(base::SysInfo::OperatingSystemVersion());
 #if defined(OS_ANDROID)
   os->set_fingerprint(
       base::android::BuildInfo::GetInstance()->android_build_fp());
 #endif
 
   base::CPU cpu_info;
   SystemProfileProto::Hardware::CPU* cpu = hardware->mutable_cpu();
   cpu->set_vendor_name(cpu_info.vendor_name());
   cpu->set_signature(cpu_info.signature());
@@ skipping 42 matching lines @@
   DCHECK(!closed_);
   closed_ = true;
 }
 
 void MetricsLog::GetEncodedLog(std::string* encoded_log) {
   DCHECK(closed_);
   uma_proto_.SerializeToString(encoded_log);
 }
 
 }  // namespace metrics