Read share targets from prefstore, and filter by engagement.

chrome/browser/webshare/share_service_impl.h

Index: chrome/browser/webshare/share_service_impl.h
diff --git a/chrome/browser/webshare/share_service_impl.h b/chrome/browser/webshare/share_service_impl.h
index 3bc47deae3f5b84fee5fe3b2ca1e73cfcedde381..04ec0d33f6c47076a0b8fc046a3d3d21faac76fb 100644
--- a/chrome/browser/webshare/share_service_impl.h
+++ b/chrome/browser/webshare/share_service_impl.h
@@ -6,11 +6,15 @@
 #define CHROME_BROWSER_WEBSHARE_SHARE_SERVICE_IMPL_H_
 
 #include <string>
+#include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/strings/string16.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_dialogs.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "third_party/WebKit/public/platform/modules/webshare/webshare.mojom.h"
+#include "third_party/WebKit/public/platform/site_engagement.mojom.h"
 
 class GURL;
 
@@ -31,6 +35,18 @@ class ShareServiceImpl : public blink::mojom::ShareService {
  private:
   FRIEND_TEST_ALL_PREFIXES(ShareServiceImplUnittest, ReplacePlaceholders);
 
+  Browser* GetBrowser();
+
+  // Returns the URL template of the target identified by |target_url|
+  std::string GetTargetTemplate(const std::string& target_url);
+
+  // Virtual for testing purposes.
+  virtual PrefService* GetPrefService();
+
+  // Returns the site engagement level of the site, |url|, with the user.
+  // Virtual for testing purposes.
+  virtual blink::mojom::EngagementLevel GetEngagementLevel(const GURL& url);
+
   // Shows the share picker dialog with |targets| as the list of applications
   // presented to the user. Passes the result to |callback|. If the user picks a
   // target, the result passed to |callback| is the manifest URL of the chosen
@@ -43,6 +59,11 @@ class ShareServiceImpl : public blink::mojom::ShareService {
   // Virtual for testing purposes.
   virtual void OpenTargetURL(const GURL& target_url);
 
+  // Returns all stored Share Targets that have a high enough engagement score
+  // with the user.
+  std::vector<std::pair<base::string16, GURL>>
+  GetTargetsWithSufficientEngagement();
+
   // Writes to |url_template_filled|, a copy of |url_template| with all
   // instances of "{title}", "{text}", and "{url}" replaced with
   // |title|, |text|, and |url| respectively.