[Downloads] Cleanup DownloadResourceHandler

content/browser/download/download_stats.cc

Index: content/browser/download/download_stats.cc
diff --git a/content/browser/download/download_stats.cc b/content/browser/download/download_stats.cc
index 5b5f893c2f47d2ab87f4bf7dcadb91de5e842fb0..138a70b2a500d6bd11947bd6c80c1d029c3f7f83 100644
--- a/content/browser/download/download_stats.cc
+++ b/content/browser/download/download_stats.cc
@@ -332,7 +332,7 @@ void RecordDownloadWriteLoopCount(int count) {
 
 void RecordAcceptsRanges(const std::string& accepts_ranges,
                          int64 download_len,
-                         const std::string& etag) {
+                         bool has_strong_validator) {
   int64 max = 1024 * 1024 * 1024;  // One Terabyte.
   download_len /= 1024;  // In Kilobytes
   static const int kBuckets = 50;
@@ -349,9 +349,7 @@ void RecordAcceptsRanges(const std::string& accepts_ranges,
                                 1,
                                 max,
                                 kBuckets);
-    // ETags that start with "W/" are considered weak ETags which don't imply
-    // byte-wise equality.
-    if (!StartsWithASCII(etag, "w/", false))
+    if (has_strong_validator)
       RecordDownloadCount(STRONG_ETAG_AND_ACCEPTS_RANGES);
   } else {
     UMA_HISTOGRAM_CUSTOM_COUNTS("Download.AcceptRangesMissingOrInvalid.KBytes",