Add support for 'display' in Manifest.

content/public/common/manifest.h

Index: content/public/common/manifest.h
diff --git a/content/public/common/manifest.h b/content/public/common/manifest.h
index 1b9b3c7ff4e77503723c5aa55c490d5f55e4b305..c790babe69598869765cd4d78acf1f2970d48fb9 100644
--- a/content/public/common/manifest.h
+++ b/content/public/common/manifest.h
@@ -15,6 +15,14 @@ namespace content {
 // described in the "Manifest for Web Application" document:
 // http://w3c.github.io/manifest/
 struct CONTENT_EXPORT Manifest {
+  enum DisplayMode {
+    DISPLAY_MODE_UNSPECIFIED,
+    DISPLAY_MODE_FULLSCREEN,
+    DISPLAY_MODE_STANDALONE,
+    DISPLAY_MODE_MINIMAL_UI,
+    DISPLAY_MODE_BROWSER
+  };
+
   Manifest();
   ~Manifest();
 
@@ -31,6 +39,10 @@ struct CONTENT_EXPORT Manifest {
   // Empty if the parsing failed or the field was not present.
   GURL start_url;
 
+  // Set to DISPLAY_MODE_UNSPECIFIED if the parsing failed or the field was not
+  // present.
+  DisplayMode display;
+
   // Maximum length for all the strings inside the Manifest when it is sent over
   // IPC. The renderer process should truncate the strings before sending the
   // Manifest and the browser process must do the same when receiving it.