Dump INFO CODE_ID containing Build ID in Linux dump_syms

I'd like to have the Build ID available for our symbol server
uploading, and this will make it easy.

Most of this change is me rewriting dump_symbols_unittest to be
typed tests so I could add a new test there.

R=mark@chromium.org
BUG=

Review URL: https://codereview.chromium.org/2052263002 .

1 files changed, 7 insertions, 1 deletions

diff --git a/src/common/module.cc b/src/common/module.cc
index fa798f48..b5fcb623 100644
--- a/src/common/module.cc
+++ b/src/common/module.cc
@@ -49,11 +49,13 @@ using std::hex;
 
 
 Module::Module(const string &name, const string &os,
-               const string &architecture, const string &id) :
+               const string &architecture, const string &id,
+               const string &code_id /* = "" */) :
     name_(name),
     os_(os),
     architecture_(architecture),
     id_(id),
+    code_id_(code_id),
     load_address_(0) { }
 
 Module::~Module() {
@@ -235,6 +237,10 @@ bool Module::Write(std::ostream &stream, SymbolData symbol_data) {
   if (!stream.good())
     return ReportError();
 
+  if (!code_id_.empty()) {
+    stream << "INFO CODE_ID " << code_id_ << endl;
+  }
+
   if (symbol_data != ONLY_CFI) {
     AssignSourceIds();