Deinline even more destructors.

chrome/browser/dom_ui/fileicon_source.cc

Index: chrome/browser/dom_ui/fileicon_source.cc
diff --git a/chrome/browser/dom_ui/fileicon_source.cc b/chrome/browser/dom_ui/fileicon_source.cc
index 7572cdc8d0014a918548a3744e053e87425c3893..a720df8b6c301d819922dfddf3325910c50d7d31 100644
--- a/chrome/browser/dom_ui/fileicon_source.cc
+++ b/chrome/browser/dom_ui/fileicon_source.cc
@@ -59,6 +59,11 @@ void FileIconSource::StartDataRequest(const std::string& path,
   }
 }
 
+std::string FileIconSource::GetMimeType(const std::string&) const {
+  // Rely on image decoder inferring the correct type.
+  return std::string();
+}
+
 void FileIconSource::OnFileIconDataAvailable(IconManager::Handle handle,
                                              SkBitmap* icon) {
   IconManager* im = g_browser_process->icon_manager();