Fix the size of webview in WebViewPlugin

We didn't set the size of webview in https://codereview.chromium.org/12218122
This change should fix that

Scaling should be done by the Compositor thread, and we are no longer using css transform to do scaling.

BUG=175121

Review URL: https://codereview.chromium.org/12230018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182263 0039d316-1c4b-4281-b951-d872f2087c98

webkit/plugins/webview_plugin.cc

@@ -140,8 +140,10 @@ void WebViewPlugin::paint(WebCanvas* canvas, const WebRect& rect) {
 void WebViewPlugin::updateGeometry(
     const WebRect& frame_rect, const WebRect& clip_rect,
     const WebVector<WebRect>& cut_out_rects, bool is_visible) {
-  if (static_cast<gfx::Rect>(frame_rect) != rect_)
+  if (static_cast<gfx::Rect>(frame_rect) != rect_) {
     rect_ = frame_rect;
+    web_view_->resize(WebSize(frame_rect.width, frame_rect.height));
+  }
 }
 
 bool WebViewPlugin::acceptsInputEvents() {