[Android] Upstream WebView.allow{Content|File}Access implementation.

android_webview/lib/aw_content_browser_client.cc

 // Copyright (c) 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/lib/aw_content_browser_client.h"
 
 #include "android_webview/browser/aw_cookie_access_policy.h"
 #include "android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h"
+#include "android_webview/common/url_constants.h"
+#include "content/public/browser/child_process_security_policy.h"
+#include "content/public/browser/render_process_host.h"
 
 namespace android_webview {
 
 AwContentBrowserClient::AwContentBrowserClient()
     : ChromeContentBrowserClient() {
 }
 
 AwContentBrowserClient::~AwContentBrowserClient() {
 }
 
+void AwContentBrowserClient::RenderProcessHostCreated(
+    content::RenderProcessHost* host) {
+  // Grant content: scheme to the whole process, since we impose per-view
+  // access checks.

[joth, 2012/10/08 17:29:01]

hmm I guess technically we could leave this and do it lazily when a WebView
attaches to this renderer with AllowContent = true. however as that's the
default it would be the common case so very little gain (but a lot of
complexity) in moving it out of here.

Worth a comment here to mention this? Or just leave as is if you prefer.

[mnaganov (inactive), 2012/10/09 09:59:36]

In that case we will end up with having different paths for rejecting a
'content:' url navigation -- either due to blocking by
ChildProcessSecurityPolicy or by our delegate. And I'm not sure we really want
that, as this may produce different error messages, which is undesired.

+  content::ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
+      host->GetID(), android_webview::kContentScheme);
+}
+
 void AwContentBrowserClient::ResourceDispatcherHostCreated() {
   ChromeContentBrowserClient::ResourceDispatcherHostCreated();
   AwResourceDispatcherHostDelegate::ResourceDispatcherHostCreated();
 }
 
 bool AwContentBrowserClient::AllowGetCookie(const GURL& url,
                                             const GURL& first_party,
                                             const net::CookieList& cookie_list,
                                             content::ResourceContext* context,
                                             int render_process_id,
@@ skipping 20 matching lines @@
   return AwCookieAccessPolicy::GetInstance()->AllowSetCookie(url,
                                                              first_party,
                                                              cookie_line,
                                                              context,
                                                              render_process_id,
                                                              render_view_id,
                                                              options);
 }
 
 }  // namespace android_webview