Implement HasPermission() method in PermissionService.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index a872ec6c9b027869d158c6dc1934f05be88253a9..5e4408578ca05e87f35a07ba6ee1459315cabd39 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -1971,6 +1971,55 @@ void ChromeContentBrowserClient::RequestPermission(
   }
 }
 
+void ChromeContentBrowserClient::HasPermission(
+    content::PermissionType permission,
+    content::WebContents* web_contents,
+    const GURL& requesting_frame,
+    const base::Callback<void(bool)>& result_callback) {
+  Profile* profile =
+      Profile::FromBrowserContext(web_contents->GetBrowserContext());
+
+  PermissionContextBase* context = nullptr;
+  switch (permission) {
+    case content::PERMISSION_MIDI_SYSEX:
+      context = MidiPermissionContextFactory::GetForProfile(profile);
+      break;
+    case content::PERMISSION_NOTIFICATIONS:
+#if defined(ENABLE_NOTIFICATIONS)
+      context = DesktopNotificationServiceFactory::GetForProfile(profile);
+#else
+      NOTIMPLEMENTED();
+#endif
+      break;
+    case content::PERMISSION_GEOLOCATION:
+      context = GeolocationPermissionContextFactory::GetForProfile(profile);
+      break;
+    case content::PERMISSION_PROTECTED_MEDIA:
+#if defined(OS_ANDROID)
+      context = ProtectedMediaIdentifierPermissionContextFactory::GetForProfile(
+          profile);
+#else
+      NOTIMPLEMENTED();
+#endif
+      break;
+    case content::PERMISSION_PUSH_MESSAGING:
+      context = gcm::PushMessagingPermissionContextFactory::GetForProfile(
+          profile);
+      break;
+    case content::PERMISSION_NUM:
+      NOTREACHED() << "Invalid RequestPermission for " << permission;
+      break;
+  }
+
+  if (!context)
+    result_callback.Run(false);
+
+  ContentSetting result = context->GetPermissionStatus(
+      requesting_frame.GetOrigin(),
+      web_contents->GetLastCommittedURL().GetOrigin());
+  result_callback.Run(result == CONTENT_SETTING_ALLOW);
+}
+
 void ChromeContentBrowserClient::CancelPermissionRequest(
     content::PermissionType permission,
     content::WebContents* web_contents,