Use a resource throttle to implement shouldOverrideUrlLoading.

android_webview/renderer/aw_content_renderer_client.cc

Index: android_webview/renderer/aw_content_renderer_client.cc
diff --git a/android_webview/renderer/aw_content_renderer_client.cc b/android_webview/renderer/aw_content_renderer_client.cc
index ea4b0bd3b628757f69886d3a78e4e2945b9b603f..3b4c1b8933273fb89d5f92975adb5e2ea2103abf 100644
--- a/android_webview/renderer/aw_content_renderer_client.cc
+++ b/android_webview/renderer/aw_content_renderer_client.cc
@@ -65,60 +65,6 @@ void AwContentRendererClient::RenderThreadStarted() {
   thread->AddObserver(visited_link_slave_.get());
 }
 
-bool AwContentRendererClient::HandleNavigation(
-    content::RenderFrame* render_frame,
-    content::DocumentState* document_state,
-    int opener_id,
-    blink::WebFrame* frame,
-    const blink::WebURLRequest& request,
-    blink::WebNavigationType type,
-    blink::WebNavigationPolicy default_policy,
-    bool is_redirect) {
-
-  // Only GETs can be overridden.
-  if (!request.httpMethod().equals("GET"))
-    return false;
-
-  // Any navigation from loadUrl, and goBack/Forward are considered application-
-  // initiated and hence will not yield a shouldOverrideUrlLoading() callback.
-  // Webview classic does not consider reload application-initiated so we
-  // continue the same behavior.
-  // TODO(sgurun) is_content_initiated is normally false for cross-origin
-  // navigations but since android_webview does not swap out renderers, this
-  // works fine. This will stop working if android_webview starts swapping out
-  // renderers on navigation.
-  bool application_initiated =
-      !document_state->navigation_state()->IsContentInitiated() ||
-      type == blink::WebNavigationTypeBackForward;
-
-  // Don't offer application-initiated navigations unless it's a redirect.
-  if (application_initiated && !is_redirect)
-    return false;
-
-  const GURL& gurl = request.url();
-  // For HTTP schemes, only top-level navigations can be overridden. Similarly,
-  // WebView Classic lets app override only top level about:blank navigations.
-  // So we filter out non-top about:blank navigations here.
-  if (frame->parent() &&
-      (gurl.SchemeIs(url::kHttpScheme) || gurl.SchemeIs(url::kHttpsScheme) ||
-       gurl.SchemeIs(url::kAboutScheme)))
-    return false;
-
-  // use NavigationInterception throttle to handle the call as that can
-  // be deferred until after the java side has been constructed.
-  if (opener_id != MSG_ROUTING_NONE) {
-    return false;
-  }
-
-  bool ignore_navigation = false;
-  base::string16 url =  request.url().string();
-
-  int render_frame_id = render_frame->GetRoutingID();
-  RenderThread::Get()->Send(new AwViewHostMsg_ShouldOverrideUrlLoading(
-      render_frame_id, url, &ignore_navigation));
-  return ignore_navigation;
-}
-
 void AwContentRendererClient::RenderFrameCreated(
     content::RenderFrame* render_frame) {
   new AwContentSettingsClient(render_frame);