Add related_applications field to manifest parser.

content/public/common/manifest.cc

Index: content/public/common/manifest.cc
diff --git a/content/public/common/manifest.cc b/content/public/common/manifest.cc
index 389754189cecbc5713782cd182839a1e5a2bc8bf..05df0027e00f1245446b1d7f831abf6a58ce4698 100644
--- a/content/public/common/manifest.cc
+++ b/content/public/common/manifest.cc
@@ -16,6 +16,13 @@ Manifest::Icon::Icon()
 Manifest::Icon::~Icon() {
 }
 
+Manifest::ChromeRelatedApplication::ChromeRelatedApplication()
+    : platform(CHROME_RELATED_APPLICATION_PLATFORM_UNSPECIFIED) {
+}
+
+Manifest::ChromeRelatedApplication::~ChromeRelatedApplication() {
+}
+
 Manifest::Manifest()
     : display(DISPLAY_MODE_UNSPECIFIED),
       orientation(blink::WebScreenOrientationLockDefault),
@@ -33,7 +40,8 @@ bool Manifest::IsEmpty() const {
          orientation == blink::WebScreenOrientationLockDefault &&
          icons.empty() &&
          gcm_sender_id.is_null() &&
-         !gcm_user_visible_only;
+         !gcm_user_visible_only &&
+         chrome_related_applications.empty();
 }
 
 } // namespace content