diff --git a/build.py b/build.py
index ca6130a78a..e8ecd57fe4 100755
--- a/build.py
+++ b/build.py
@@ -316,7 +316,7 @@ def examples_star_json(name, match):
                 '../externs/oli.js',
                 '../externs/proj4js.js',
                 '../externs/tilejson.js',
-                '../externs/html5.js',
+                '../externs/closure-compiler.js',
             ],
         })
         with open(t.name, 'w') as f:
diff --git a/buildcfg/base.json b/buildcfg/base.json
index 6b645e49e7..4a0fc293c1 100644
--- a/buildcfg/base.json
+++ b/buildcfg/base.json
@@ -46,7 +46,7 @@
     "../externs/oli.js",
     "../externs/proj4js.js",
     "../externs/tilejson.js",
-    "../externs/html5.js"
+    "../externs/closure-compiler.js"
   ],
 
   "level": "VERBOSE",
diff --git a/buildcfg/ol-all.json b/buildcfg/ol-all.json
index a808f0f797..b3a6cfd3de 100644
--- a/buildcfg/ol-all.json
+++ b/buildcfg/ol-all.json
@@ -11,7 +11,7 @@
     "../externs/oli.js",
     "../externs/proj4js.js",
     "../externs/tilejson.js",
-    "../externs/html5.js"
+    "../externs/closure-compiler.js"
   ],
 
   "inherits": "base.json",
diff --git a/buildcfg/ol-simple.json b/buildcfg/ol-simple.json
index d7e50b1552..93192f4484 100644
--- a/buildcfg/ol-simple.json
+++ b/buildcfg/ol-simple.json
@@ -20,7 +20,7 @@
     "../externs/oli.js",
     "../externs/proj4js.js",
     "../externs/tilejson.js",
-    "../externs/html5.js"
+    "../externs/closure-compiler.js"
   ],
 
   "inherits": "ol.json",
diff --git a/buildcfg/ol-whitespace.json b/buildcfg/ol-whitespace.json
index 4364a2769d..fb956da2fd 100644
--- a/buildcfg/ol-whitespace.json
+++ b/buildcfg/ol-whitespace.json
@@ -21,7 +21,7 @@
     "../externs/oli.js",
     "../externs/proj4js.js",
     "../externs/tilejson.js",
-    "../externs/html5.js"
+    "../externs/closure-compiler.js"
   ],
 
   "inherits": "ol.json",
diff --git a/buildcfg/ol.json b/buildcfg/ol.json
index c64d3fbf0d..7bfc960045 100644
--- a/buildcfg/ol.json
+++ b/buildcfg/ol.json
@@ -21,7 +21,7 @@
     "../externs/oli.js",
     "../externs/proj4js.js",
     "../externs/tilejson.js",
-    "../externs/html5.js"
+    "../externs/closure-compiler.js"
   ],
 
   "inherits": "base.json",
diff --git a/externs/closure-compiler.js b/externs/closure-compiler.js
new file mode 100644
index 0000000000..7632dd8368
--- /dev/null
+++ b/externs/closure-compiler.js
@@ -0,0 +1,38 @@
+/**
+ * @fileoverview Definitions for externs that are either missing or incorrect
+ * in the current release version of the closure compiler we use.
+ *
+ * The entries must be removed once they are available/correct in the
+ * version we use.
+ *
+ * @externs
+ */
+
+// @see https://code.google.com/p/closure-compiler/issues/detail?id=1060
+
+/** @type {Date} */
+HTMLInputElement.prototype.valueAsDate;
+
+/** @type {number} */
+HTMLInputElement.prototype.valueAsNumber;
+
+
+// @see https://code.google.com/p/closure-compiler/issues/detail?id=1084
+
+/** @type {?number} */
+DeviceRotationRate.prototype.alpha;
+
+/** @type {?number} */
+DeviceRotationRate.prototype.beta;
+
+/** @type {?number} */
+DeviceRotationRate.prototype.gamma;
+
+
+// @see https://code.google.com/p/closure-compiler/issues/detail?id=1088
+
+/** @type {?number} */
+DeviceOrientationEvent.prototype.webkitCompassAccuracy;
+
+/** @type {?number} */
+DeviceOrientationEvent.prototype.webkitCompassHeading;
diff --git a/externs/html5.js b/externs/html5.js
deleted file mode 100644
index bc8a63ad2f..0000000000
--- a/externs/html5.js
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * @fileoverview Definitions for extensions over the W3C's DOM3 specification
- * in HTML5 which are not yet available with the current release version of
- * the closure compiler we use.
- * @see http://dev.w3.org/html5/spec/Overview.html
- * @externs
- */
-
-// See issue https://code.google.com/p/closure-compiler/issues/detail?id=1060
-// FIXME: this should be remove when the next closure compiler release is out
-//        with valueAsDate and valueAsNumber externs.
-
-/** @type {Date} */
-HTMLInputElement.prototype.valueAsDate;
-
-/** @type {number} */
-HTMLInputElement.prototype.valueAsNumber;
diff --git a/src/ol/deviceorientation.js b/src/ol/deviceorientation.js
index 3b86d5bba4..a9660d1119 100644
--- a/src/ol/deviceorientation.js
+++ b/src/ol/deviceorientation.js
@@ -122,6 +122,11 @@ ol.DeviceOrientation.prototype.orientationChange_ = function(browserEvent) {
     // event.absolute is undefined in iOS.
     if (goog.isBoolean(event.absolute) && event.absolute) {
       this.set(ol.DeviceOrientationProperty.HEADING, alpha);
+    } else if (goog.isDefAndNotNull(event.webkitCompassHeading) &&
+               goog.isDefAndNotNull(event.webkitCompassAccuracy) &&
+               event.webkitCompassAccuracy != -1) {
+      var heading = goog.math.toRadians(event.webkitCompassHeading);
+      this.set(ol.DeviceOrientationProperty.HEADING, heading);
     }
   }
   if (goog.isDefAndNotNull(event.beta)) {