Add a flag showing whether the current request was ignored by a handler

When converting to using a resource throttle to call
shouldOverrideUrlLoading in WebView we need to know whether the current
request was ignored because of shouldOverrideUrlLoading or something
else. This is because we need to know when to post OnPageFinished.

This is an initial CL that simply passes the flag where it needs to be
-- the actual move to using a resource throttle will be added in a
follow-up CL to make that CL more easily reviewable/updatable.
The flag is passed down from
WebURLLoaderImpl::Context::OnCompletedRequest in
content/child/web_url_loader_impl.cc all the way to
AwWebContentsObserver.didFailLoad so that we can make the right decision
there. A large part of the flag-passing is handled through adding a flag
to WebURLError and ResourceError in Blink:
https://codereview.chromium.org/1178273007/

TBR=jochen@chromium.org,fsamuel@chromium.org
BUG=325351

Review URL: https://codereview.chromium.org/1194383003

Cr-Commit-Position: refs/heads/master@{#335974}

1 files changed, 2 insertions, 1 deletions

diff --git a/chrome/browser/after_startup_task_utils.cc b/chrome/browser/after_startup_task_utils.cc
index a4dc5ef..8422884 100644
--- a/chrome/browser/after_startup_task_utils.cc
+++ b/chrome/browser/after_startup_task_utils.cc
@@ -138,7 +138,8 @@ class StartupObserver : public WebContentsObserver, public base::NonThreadSafe {
   void DidFailLoad(content::RenderFrameHost* render_frame_host,
                    const GURL& validated_url,
                    int error_code,
-                   const base::string16& error_description) override {
+                   const base::string16& error_description,
+                   bool was_ignored_by_handler) override {
     if (!render_frame_host->GetParent())
       OnStartupComplete();
   }