Implement ChromeOS mime type extension mappings.

net/base/mime_util.cc

Index: net/base/mime_util.cc
diff --git a/net/base/mime_util.cc b/net/base/mime_util.cc
index 7db410ba0c9bf636ceee0feeeaf635bfaf7a1bbc..4fe4991a2ea51ab497781ceae546007633ba39c5 100644
--- a/net/base/mime_util.cc
+++ b/net/base/mime_util.cc
@@ -164,11 +164,6 @@ class MimeUtil : public PlatformMimeUtil {
 static base::LazyInstance<MimeUtil>::Leaky g_mime_util =
     LAZY_INSTANCE_INITIALIZER;
 
-struct MimeInfo {
-  const char* const mime_type;
-  const char* const extensions;  // comma separated list
-};
-
 static const MimeInfo primary_mappings[] = {
   { "text/html", "html,htm,shtml,shtm" },
   { "text/css", "css" },
@@ -216,12 +211,11 @@ static const MimeInfo secondary_mappings[] = {
   { "application/pkcs7-mime", "p7m,p7c,p7z" },
   { "application/pkcs7-signature", "p7s" },
   { "application/x-mpegurl", "m3u8" },
-  { "application/epub+zip", "epub" },

[yawano, 2015/05/15 08:11:51]

Since epub mime type is added for same reason (http://crrev.com/1061833002), I
move this to _chromeos.cc.

 };
 
-static const char* FindMimeType(const MimeInfo* mappings,
-                                size_t mappings_len,
-                                const char* ext) {
+const char* FindMimeType(const MimeInfo* mappings,
+                         size_t mappings_len,
+                         const char* ext) {
   size_t ext_len = strlen(ext);
 
   for (size_t i = 0; i < mappings_len; ++i) {