Make SkyView vs. WebView controlable via url path

sky/engine/web/WebViewImpl.cpp

Index: sky/engine/web/WebViewImpl.cpp
diff --git a/sky/engine/web/WebViewImpl.cpp b/sky/engine/web/WebViewImpl.cpp
index 342bd53d669941333e55d8b6bf7a87d318f1cf67..10ae28b364b37bb7314b6a3e1fc046b55505e255 100644
--- a/sky/engine/web/WebViewImpl.cpp
+++ b/sky/engine/web/WebViewImpl.cpp
@@ -83,6 +83,7 @@
 #include "sky/engine/wtf/CurrentTime.h"
 #include "sky/engine/wtf/RefPtr.h"
 #include "sky/engine/wtf/TemporaryChange.h"
+#include "url/gurl.h"
 
 // Get rid of WTF's pow define so we can use std::pow.
 #undef pow
@@ -92,6 +93,20 @@ namespace blink {
 
 // WebView ----------------------------------------------------------------
 
+bool WebView::shouldUseWebView(const GURL& url)
+{
+    std::string filename = url.ExtractFileName();
+    int hashStart = filename.find('#');
+    if (hashStart != -1)
+        filename.resize(hashStart);
+    int queryStart = filename.find('?');
+    if (queryStart != -1)
+        filename.resize(queryStart);
+    // For now .dart indicates we should use SkyView. Eventually we'll
+    // use SkyView for all urls regardless of file extension.
+    return !EndsWith(filename, ".dart", false);
+}
+
 WebView* WebView::create(WebViewClient* client)
 {
     // Pass the WebViewImpl's self-reference to the caller.