Use a resource throttle to implement shouldOverrideUrlLoading.

android_webview/renderer/aw_content_renderer_client.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "android_webview/renderer/aw_content_renderer_client.h"
 
 #include "android_webview/common/aw_resource.h"
 #include "android_webview/common/render_view_messages.h"
 #include "android_webview/common/url_constants.h"
 #include "android_webview/renderer/aw_content_settings_client.h"
@@ skipping 47 matching lines @@
 
   RenderThread* thread = RenderThread::Get();
 
   aw_render_process_observer_.reset(new AwRenderProcessObserver);
   thread->AddObserver(aw_render_process_observer_.get());
 
   visited_link_slave_.reset(new visitedlink::VisitedLinkSlave);
   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(

[mnaganov (inactive), 2015/06/18 18:08:20]

Note that this is the only place where we send this message, so it can also be
removed together with the receiving part in
android_webview/browser/aw_content_browser_client.cc.

-      render_frame_id, url, &ignore_navigation));
-  return ignore_navigation;
-}
-
 void AwContentRendererClient::RenderFrameCreated(
     content::RenderFrame* render_frame) {
   new AwContentSettingsClient(render_frame);
   new PrintRenderFrameObserver(render_frame);
   new AwRenderFrameExt(render_frame);
   new AwMessagePortClient(render_frame);
 
   // TODO(jam): when the frame tree moves into content and parent() works at
   // RenderFrame construction, simplify this by just checking parent().
   content::RenderFrame* parent_frame =
@@ skipping 74 matching lines @@
 
 bool AwContentRendererClient::ShouldOverridePageVisibilityState(
     const content::RenderFrame* render_frame,
     blink::WebPageVisibilityState* override_state) {
   // webview is always visible due to rendering requirements.
   *override_state = blink::WebPageVisibilityStateVisible;
   return true;
 }
 
 }  // namespace android_webview