Expose Physical Web data

ios/chrome/common/physical_web/ios_chrome_physical_web_data_source.h

Index: ios/chrome/common/physical_web/ios_chrome_physical_web_data_source.h
diff --git a/ios/chrome/common/physical_web/ios_chrome_physical_web_data_source.h b/ios/chrome/common/physical_web/ios_chrome_physical_web_data_source.h
index 2960830ff4d23abdcab5d61f1480293c439271fb..671fe6a63e3c1ae175c7ef166a8061c2f890e87f 100644
--- a/ios/chrome/common/physical_web/ios_chrome_physical_web_data_source.h
+++ b/ios/chrome/common/physical_web/ios_chrome_physical_web_data_source.h
@@ -14,6 +14,7 @@ class ListValue;
 }
 
 @class PhysicalWebScanner;
+@class PhysicalWebListener;

[mattreynolds, 2016/08/23 19:33:42]

This forward declaration should just be "class PhysicalWebListener;" 
PhysicalWebScanner is an Objective-C class which is why it uses slightly
different syntax.

[hayesjordan, 2016/08/23 19:36:20]

Done.

 
 // iOS implementation of PhysicalWebDataSource
 class IOSChromePhysicalWebDataSource : public PhysicalWebDataSource {
@@ -36,6 +37,12 @@ class IOSChromePhysicalWebDataSource : public PhysicalWebDataSource {
   // or more discovered URLs that have not been sent to the resolution service.
   bool HasUnresolvedDiscoveries() override;
 
+  // Register for changes to Physical Web URLs and associated page metadata.
+  void RegisterListener(PhysicalWebListener* physical_web_listener) override;
+
+  // Unregister for changes to Physical Web URLs and associated page metadata.
+  void UnregisterListener(PhysicalWebListener* physical_web_listener) override;
+
  private:
   // Scanner for nearby Physical Web URL devices.
   base::scoped_nsobject<PhysicalWebScanner> scanner_;