Rename BrowserEnv to ViewportMetrics

Becuase that's what it is.

src/core/ReactEventEmitter.js

@@ -19,11 +19,11 @@
 
 "use strict";
 
-var BrowserEnv = require('BrowserEnv');
 var EventConstants = require('EventConstants');
 var EventListener = require('EventListener');
 var EventPluginHub = require('EventPluginHub');
 var ExecutionEnvironment = require('ExecutionEnvironment');
+var ViewportMetrics = require('ViewportMetrics');
 
 var invariant = require('invariant');
 var isEventSupported = require('isEventSupported');
@@ -126,7 +126,7 @@ function trapCapturedEvent(topLevelType, handlerBaseName, element) {
  * @see http://www.quirksmode.org/dom/events/scroll.html
  */
 function registerScrollValueMonitoring() {
-  var refresh = BrowserEnv.refreshAuthoritativeScrollValues;
+  var refresh = ViewportMetrics.refreshScrollValues;
   EventListener.listen(window, 'scroll', refresh);
   EventListener.listen(window, 'resize', refresh);
 }

src/dom/ViewportMetrics.js

@@ -13,24 +13,24 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
- * @providesModule BrowserEnv
+ * @providesModule ViewportMetrics
  */
 
 "use strict";
 
-/**
- * A place to share/cache browser/chrome level computations.
- */
-var BrowserEnv = {
+var ViewportMetrics = {
+
   currentScrollLeft: 0,
+
   currentScrollTop: 0,
-  browserInfo: null,
-  refreshAuthoritativeScrollValues: function() {
-    BrowserEnv.currentScrollLeft =
+
+  refreshScrollValues: function() {
+    ViewportMetrics.currentScrollLeft =
       document.body.scrollLeft + document.documentElement.scrollLeft;
-    BrowserEnv.currentScrollTop =
+    ViewportMetrics.currentScrollTop =
       document.body.scrollTop + document.documentElement.scrollTop;
   }
+
 };
 
-module.exports = BrowserEnv;
+module.exports = ViewportMetrics;

src/event/synthetic/SyntheticMouseEvent.js

@@ -19,8 +19,8 @@
 
 "use strict";
 
-var BrowserEnv = require('BrowserEnv');
 var SyntheticUIEvent = require('SyntheticUIEvent');
+var ViewportMetrics = require('ViewportMetrics');
 
 /**
  * @interface MouseEvent
@@ -61,12 +61,12 @@ var MouseEventInterface = {
   pageX: function(event) {
     return 'pageX' in event ?
       event.pageX :
-      event.clientX + BrowserEnv.currentPageScrollLeft;
+      event.clientX + ViewportMetrics.currentPageScrollLeft;
   },
   pageY: function(event) {
     return 'pageY' in event ?
       event.pageY :
-      event.clientY + BrowserEnv.currentPageScrollTop;
+      event.clientY + ViewportMetrics.currentPageScrollTop;
   }
 };
 

src/eventPlugins/TapEventPlugin.js

@@ -19,11 +19,11 @@
 
 "use strict";
 
-var BrowserEnv = require('BrowserEnv');
 var EventPluginUtils = require('EventPluginUtils');
 var EventPropagators = require('EventPropagators');
 var SyntheticUIEvent = require('SyntheticUIEvent');
 var TouchEventUtils = require('TouchEventUtils');
+var ViewportMetrics = require('ViewportMetrics');
 
 var keyOf = require('keyOf');
 
@@ -49,7 +49,7 @@ function getAxisCoordOfEvent(axis, nativeEvent) {
   }
   return axis.page in nativeEvent ?
     nativeEvent[axis.page] :
-    nativeEvent[axis.client] + BrowserEnv[axis.envScroll];
+    nativeEvent[axis.client] + ViewportMetrics[axis.envScroll];
 }
 
 function getDistance(coords, nativeEvent) {