Add share_target field to Manifest.

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 8e09aad2e71ea9aa86f681d7df267f2dbbddb09c..166c268e928fc6a55346796de9209e000baf3504 100644
--- a/content/public/common/manifest.cc
+++ b/content/public/common/manifest.cc
@@ -14,22 +14,23 @@ const int64_t Manifest::kInvalidOrMissingColor =
     static_cast<int64_t>(std::numeric_limits<int32_t>::max()) + 1;
 const size_t Manifest::kMaxIPCStringLength = 4 * 1024;
 
-Manifest::Icon::Icon() { }
+Manifest::Icon::Icon() = default;
 
 Manifest::Icon::Icon(const Icon& other) = default;
 
-Manifest::Icon::~Icon() {
-}
+Manifest::Icon::~Icon() = default;
 
 bool Manifest::Icon::operator==(const Manifest::Icon& other) const {
   return src == other.src && type == other.type && sizes == other.sizes;
 }
 
-Manifest::RelatedApplication::RelatedApplication() {
-}
+Manifest::ShareTarget::ShareTarget() = default;
 
-Manifest::RelatedApplication::~RelatedApplication() {
-}
+Manifest::ShareTarget::~ShareTarget() = default;
+
+Manifest::RelatedApplication::RelatedApplication() = default;
+
+Manifest::RelatedApplication::~RelatedApplication() = default;
 
 Manifest::Manifest()
     : display(blink::WebDisplayModeUndefined),
@@ -37,12 +38,12 @@ Manifest::Manifest()
       prefer_related_applications(false),
       theme_color(Manifest::kInvalidOrMissingColor),
       background_color(Manifest::kInvalidOrMissingColor) {
+  share_target = base::nullopt;
 }
 
 Manifest::Manifest(const Manifest& other) = default;
 
-Manifest::~Manifest() {
-}
+Manifest::~Manifest() = default;
 
 bool Manifest::IsEmpty() const {
   return name.is_null() &&
@@ -51,6 +52,7 @@ bool Manifest::IsEmpty() const {
          display == blink::WebDisplayModeUndefined &&
          orientation == blink::WebScreenOrientationLockDefault &&
          icons.empty() &&
+         !share_target.has_value() &&
          related_applications.empty() &&
          !prefer_related_applications &&
          theme_color == Manifest::kInvalidOrMissingColor &&