Make Edit>Speech>Speak Selection work for PDFs on Mac

extensions/browser/guest_view/guest_view_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/browser/guest_view/guest_view_manager.h"
 
 #include "base/strings/stringprintf.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
@@ skipping 168 matching lines @@
     auto guest_view = GuestViewBase::FromWebContents(guest.second);
     if (guest_view->owner_web_contents() != owner_web_contents)
       continue;
 
     if (callback.Run(guest_view->web_contents()))
       return true;
   }
   return false;
 }
 
+WebContents* GuestViewManager::GetFullPageGuest(
+    WebContents* embedder_web_contents) {
+  WebContents* result = nullptr;
+  ForEachGuest(embedder_web_contents,
+               base::Bind(&GuestViewManager::GetFullPageGuestHelper, &result));
+  return result;
+}
+
 void GuestViewManager::AddGuest(int guest_instance_id,
                                 WebContents* guest_web_contents) {
   CHECK(!ContainsKey(guest_web_contents_by_instance_id_, guest_instance_id));
   CHECK(CanUseGuestInstanceID(guest_instance_id));
   guest_web_contents_by_instance_id_[guest_instance_id] = guest_web_contents;
 }
 
 void GuestViewManager::RemoveGuest(int guest_instance_id) {
   auto it = guest_web_contents_by_instance_id_.find(guest_instance_id);
   DCHECK(it != guest_web_contents_by_instance_id_.end());
@@ skipping 52 matching lines @@
   }
   return true;
 }
 
 bool GuestViewManager::CanUseGuestInstanceID(int guest_instance_id) {
   if (guest_instance_id <= last_instance_id_removed_)
     return false;
   return !ContainsKey(removed_instance_ids_, guest_instance_id);
 }
 
+// static
+bool GuestViewManager::GetFullPageGuestHelper(
+    content::WebContents** result,
+    content::WebContents* guest_web_contents) {
+  auto guest_view = GuestViewBase::FromWebContents(guest_web_contents);
+  if (guest_view && guest_view->is_full_page_plugin()) {
+    *result = guest_web_contents;
+    return true;
+  }
+  return false;
+}
+
 bool GuestViewManager::CanEmbedderAccessInstanceID(
     int embedder_render_process_id,
     int guest_instance_id) {
   // The embedder is trying to access a guest with a negative or zero
   // instance ID.
   if (guest_instance_id <= guestview::kInstanceIDNone)
     return false;
 
   // The embedder is trying to access an instance ID that has not yet been
   // allocated by GuestViewManager. This could cause instance ID
@@ skipping 36 matching lines @@
   return element_instance_id < other.element_instance_id;
 }
 
 bool GuestViewManager::ElementInstanceKey::operator==(
     const GuestViewManager::ElementInstanceKey& other) const {
   return (embedder_process_id == other.embedder_process_id) &&
     (element_instance_id == other.element_instance_id);
 }
 
 }  // namespace extensions