New tabCapture.captureOffscreenTab API, initially for Presentation API 1UA mode

chrome/browser/extensions/api/tab_capture/tab_capture_registry.cc

Index: chrome/browser/extensions/api/tab_capture/tab_capture_registry.cc
diff --git a/chrome/browser/extensions/api/tab_capture/tab_capture_registry.cc b/chrome/browser/extensions/api/tab_capture/tab_capture_registry.cc
index 866f6ceae240c9ceed18353d4c75964b655f1b5d..d67a1be72f004c4c31447394ed9b907dfe49bf94 100644
--- a/chrome/browser/extensions/api/tab_capture/tab_capture_registry.cc
+++ b/chrome/browser/extensions/api/tab_capture/tab_capture_registry.cc
@@ -30,9 +30,11 @@ class TabCaptureRegistry::LiveRequest : public content::WebContentsObserver {
  public:
   LiveRequest(content::WebContents* target_contents,
               const std::string& extension_id,
+              bool is_anonymous,
               TabCaptureRegistry* registry)
       : content::WebContentsObserver(target_contents),
         extension_id_(extension_id),
+        is_anonymous_(is_anonymous),
         registry_(registry),
         capture_state_(tab_capture::TAB_CAPTURE_STATE_NONE),
         is_verified_(false),
@@ -51,6 +53,9 @@ class TabCaptureRegistry::LiveRequest : public content::WebContentsObserver {
   const std::string& extension_id() const {
     return extension_id_;
   }
+  bool is_anonymous() const {
+    return is_anonymous_;
+  }
   TabCaptureState capture_state() const {
     return capture_state_;
   }
@@ -120,6 +125,7 @@ class TabCaptureRegistry::LiveRequest : public content::WebContentsObserver {
 
  private:
   const std::string extension_id_;
+  const bool is_anonymous_;
   TabCaptureRegistry* const registry_;
   TabCaptureState capture_state_;
   bool is_verified_;
@@ -164,13 +170,13 @@ void TabCaptureRegistry::GetCapturedTabs(
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(list_of_capture_info);
   list_of_capture_info->Clear();
-  for (ScopedVector<LiveRequest>::const_iterator it = requests_.begin();
-       it != requests_.end(); ++it) {
-    if ((*it)->is_verified() && (*it)->extension_id() == extension_id) {
-      tab_capture::CaptureInfo info;
-      (*it)->GetCaptureInfo(&info);
-      list_of_capture_info->Append(info.ToValue().release());
-    }
+  for (const LiveRequest* request : requests_) {
+    if (request->is_anonymous() || !request->is_verified() ||
+        request->extension_id() != extension_id)
+      continue;
+    tab_capture::CaptureInfo info;
+    request->GetCaptureInfo(&info);
+    list_of_capture_info->Append(info.ToValue().release());
   }
 }
 
@@ -190,7 +196,8 @@ void TabCaptureRegistry::OnExtensionUnloaded(
 }
 
 bool TabCaptureRegistry::AddRequest(content::WebContents* target_contents,
-                                    const std::string& extension_id) {
+                                    const std::string& extension_id,
+                                    bool is_anonymous) {
   LiveRequest* const request = FindRequest(target_contents);
 
   // Currently, we do not allow multiple active captures for same tab.
@@ -204,7 +211,8 @@ bool TabCaptureRegistry::AddRequest(content::WebContents* target_contents,
     }
   }
 
-  requests_.push_back(new LiveRequest(target_contents, extension_id, this));
+  requests_.push_back(
+      new LiveRequest(target_contents, extension_id, is_anonymous, this));
   return true;
 }
 
@@ -305,6 +313,9 @@ void TabCaptureRegistry::OnRequestUpdate(
 
 void TabCaptureRegistry::DispatchStatusChangeEvent(
     const LiveRequest* request) const {
+  if (request->is_anonymous())
+    return;
+
   EventRouter* router = EventRouter::Get(browser_context_);
   if (!router)
     return;