OOPIFs: Transitioning MHTML generation from view-oriented to frame-oriented.

content/renderer/web_frame_utils.cc

Index: content/renderer/web_frame_utils.cc
diff --git a/content/renderer/web_frame_utils.cc b/content/renderer/web_frame_utils.cc
index 6cc52aacd379c0ea38646f07c00a3afe95fba76f..ee721478c55805817f9bdc51e69edaeefdfaa339 100644
--- a/content/renderer/web_frame_utils.cc
+++ b/content/renderer/web_frame_utils.cc
@@ -8,6 +8,8 @@
 #include "content/renderer/render_frame_proxy.h"
 #include "ipc/ipc_message.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
+#include "third_party/WebKit/public/web/WebLocalFrame.h"
+#include "third_party/WebKit/public/web/WebRemoteFrame.h"
 
 namespace content {
 
@@ -19,4 +21,16 @@ int GetRoutingIdForFrameOrProxy(blink::WebFrame* web_frame) {
   return RenderFrameImpl::FromWebFrame(web_frame)->GetRoutingID();
 }
 
+blink::WebFrame* GetWebFrameFromRoutingIdForFrameOrProxy(int routing_id) {
+  auto* render_frame = RenderFrameImpl::FromRoutingID(routing_id);
+  if (render_frame)
+    return render_frame->GetWebFrame();
+
+  auto* render_frame_proxy = RenderFrameProxy::FromRoutingID(routing_id);
+  if (render_frame_proxy)
+    return render_frame_proxy->web_frame();
+
+  return nullptr;
+}
+
 }  // namespace content