app.window: Replace linear view search with direct lookup.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index b56a17eb6b246ed3da4a9dcc1eb18b42a781c1c4..95a4eda7909a0d3c4a9705f2f989dc79d55ad289 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -371,12 +371,6 @@ static const size_t kContentIntentDelayMilliseconds = 700;
 static RenderViewImpl* (*g_create_render_view_impl)(RenderViewImplParams*) =
     NULL;
 
-static RenderViewImpl* FromRoutingID(int32 routing_id) {
-  RoutingIDViewMap* views = g_routing_id_view_map.Pointer();
-  RoutingIDViewMap::iterator it = views->find(routing_id);
-  return it == views->end() ? NULL : it->second;
-}
-
 static WebKit::WebFrame* FindFrameByID(WebKit::WebFrame* root, int frame_id) {
   for (WebFrame* frame = root; frame; frame = frame->traverseNext(false)) {
     if (frame->identifier() == frame_id)
@@ -785,6 +779,18 @@ RenderView* RenderView::FromWebView(WebKit::WebView* webview) {
 }
 
 /*static*/
+RenderViewImpl* RenderViewImpl::FromRoutingID(int32 routing_id) {
+  RoutingIDViewMap* views = g_routing_id_view_map.Pointer();
+  RoutingIDViewMap::iterator it = views->find(routing_id);
+  return it == views->end() ? NULL : it->second;
+}
+
+/*static*/
+RenderView* RenderView::FromRoutingID(int routing_id) {
+  return RenderViewImpl::FromRoutingID(routing_id);
+}
+
+/*static*/
 void RenderView::ForEach(RenderViewVisitor* visitor) {
   ViewMap* views = g_view_map.Pointer();
   for (ViewMap::iterator it = views->begin(); it != views->end(); ++it) {