Media Documents should disable View [Page] Source

content/browser/web_contents/navigation_controller_impl.cc

Index: content/browser/web_contents/navigation_controller_impl.cc
diff --git a/content/browser/web_contents/navigation_controller_impl.cc b/content/browser/web_contents/navigation_controller_impl.cc
index bd6971646b8d428103ed5fcb13eb1b9d226ebf1e..f6f87d5a70448b3792a687d6b8264048281b4e40 100644
--- a/content/browser/web_contents/navigation_controller_impl.cc
+++ b/content/browser/web_contents/navigation_controller_impl.cc
@@ -442,11 +442,12 @@ NavigationEntry* NavigationControllerImpl::GetLastCommittedEntry() const {
 }
 
 bool NavigationControllerImpl::CanViewSource() const {
-  bool is_supported_mime_type = net::IsSupportedNonImageMimeType(
-      web_contents_->GetContentsMimeType().c_str());
+  const std::string& mime_type = web_contents_->GetContentsMimeType();
+  bool is_viewable_mime_type = net::IsSupportedNonImageMimeType(mime_type) &&
+      !net::IsSupportedMediaMimeType(mime_type);
   NavigationEntry* active_entry = GetActiveEntry();
   return active_entry && !active_entry->IsViewSourceMode() &&
-    is_supported_mime_type && !web_contents_->GetInterstitialPage();
+      is_viewable_mime_type && !web_contents_->GetInterstitialPage();
 }
 
 int NavigationControllerImpl::GetLastCommittedEntryIndex() const {