Getting explicit about pixels and size.

Eventually, well have to ask renderers for all pixel and size related stuff.  And the map overlay renderer will do all pixel<->loc math.  For now, we let the map do this math based on its viewport - as this is where the mouse events are handled and it is pixels relative to the viewport that are being generated.  For now, the getViewportPixelForLoc and getLocForViewportPixel are now more explicitly named.

src/ol/renderer/MapRenderer.js

@@ -108,38 +108,3 @@ ol.renderer.MapRenderer.pickRendererType = function(preferences) {
     // if we didn't find any of the preferred renderers, use the first
     return Renderer || Candidates[0] || null;
 };
-
-/**
- * @param {goog.math.Coordinate|{x: number, y: number}} pixel
- * @return {ol.Loc}
- */
-ol.renderer.MapRenderer.prototype.getLocForPixel = function(pixel) {
-    var center = this.renderedCenter_,
-        resolution = this.renderedResolution_,
-        size = goog.style.getSize(this.container_);
-    return center.add(
-        (pixel.x - size.width/2) * resolution,
-        (size.height/2 - pixel.y) * resolution
-    );
-};
-
-/**
- * @param {ol.Loc} loc
- * @return {{x: number, y: number}}
- */
-ol.renderer.MapRenderer.prototype.getPixelForLoc = function(loc) {
-    var center = this.renderedCenter_,
-        resolution = this.renderedResolution_,
-        size = this.getSize();
-    return {
-        x: (size.width*resolution/2 + loc.getX() - center.getX())/resolution,
-        y: (size.height*resolution/2 - loc.getY() + center.getY())/resolution
-    };
-};
-
-/**
- * @return {goog.math.Size} The currently rendered map size in pixels.
- */
-ol.renderer.MapRenderer.prototype.getSize = function() {
-    return goog.style.getSize(this.container_);
-};