Add deprecation warnings to old powerful features on insecure origins.

Source/core/frame/UseCounter.cpp

Index: Source/core/frame/UseCounter.cpp
diff --git a/Source/core/frame/UseCounter.cpp b/Source/core/frame/UseCounter.cpp
index 7cce5a0ef4b188f6b95262f9673cede6dd469b05..4d445415e6ec675d4a21b920897434a0f0612220 100644
--- a/Source/core/frame/UseCounter.cpp
+++ b/Source/core/frame/UseCounter.cpp
@@ -899,6 +899,19 @@ String UseCounter::deprecationMessage(Feature feature)
     case CSSKeyframesRuleInsertRule:
         return "'CSSKeyframesRule.insertRule()' is deprecated and will be removed in M45, around August 2015. Please use 'CSSKeyframesRule.appendRule()' instead.";
 
+    // Powerful features on insecure origins (https://goo.gl/rStTGz)
+    case GeolocationInsecureOrigin:
+        return "Geolocation via getCurrentPosition() and watchPosition() will be deprecated over insecure origins in the future. You should consider switching your application to a secure origin, such as HTTPS. See http://goo.gl/rStTGz for more details.";

[Michael van Ouwerkerk, 2015/04/30 13:15:21]

nit: might as well use https for all the goo.gl links

[jww, 2015/04/30 17:28:45]

For sure. At least I got it right in the comment :-) I should file a bug that
the URL shortener doesn't give HTTPS by default.

+
+    case GetUserMediaInsecureOrigin:
+        return "getUserMedia() will be deprecated over insecure origins in the future. You should consider switching your application to a secure origin, such as HTTPS. See http://goo.gl/rStTGz for more details.";
+
+    case DeviceMotionInsecureOrigin:
+        return "The 'devicemotion' event will be deprecated over insecure origins in the future. You should consider switching your application to a secure origin, such as HTTPS. See http://goo.gl/rStTGz for more details.";
+
+    case FullscreenInsecureOrigin:
+        return "requestFullscreen() will be deprecated over insecure origins in the future. You should consider switching your application to a secure origin, such as HTTPS. See http://goo.gl/rStTGz for more details.";
+
     // Features that aren't deprecated don't have a deprecation message.
     default:
         return String();