Modify ZipString to allow the filename to be passed as an argument

chrome/browser/feedback/tracing_manager.cc

Index: chrome/browser/feedback/tracing_manager.cc
diff --git a/chrome/browser/feedback/tracing_manager.cc b/chrome/browser/feedback/tracing_manager.cc
index d4b56daef40bb605a95a0b99513dd45317d4df67..77fac8d4b1eae9c77ea895c109ebdece1c2cb129 100644
--- a/chrome/browser/feedback/tracing_manager.cc
+++ b/chrome/browser/feedback/tracing_manager.cc
@@ -16,6 +16,9 @@ namespace {
 TracingManager* g_tracing_manager = NULL;
 // Trace IDs start at 1 and increase.
 int g_next_trace_id = 1;
+// Name of the file to store the tracing data as.
+const base::FilePath::CharType kTracingFilename[] =
+    FILE_PATH_LITERAL("tracing.json");
 }
 
 TracingManager::TracingManager()
@@ -96,7 +99,7 @@ void TracingManager::OnEndTracingComplete() {
   data_ = std::string("[") + data_ + "]";
 
   std::string output_val;
-  feedback_util::ZipString(data_, &output_val);
+  feedback_util::ZipString(kTracingFilename, data_, &output_val);
 
   scoped_refptr<base::RefCountedString> output(
       base::RefCountedString::TakeString(&output_val));