Crash when visiting a page that requests geolocation

[Olivier Tilloy]

The following QML code crashes while rendering when launched with qmlscene:

    import QtQuick 2.0
    import com.canonical.Oxide 0.1
    WebView {
        width: 800
        height: 600
        url: "http://html5demos.com/geo"
    }

[Olivier Tilloy (osomon)]

This is the backtrace:

#0 content::LocationArbitratorImpl::StartProviders (this=0x7fff58001780, use_high_accuracy=false)
    at chromium/src/content/browser/geolocation/location_arbitrator_impl.cc:63
#1 0x00007fffbeb23369 in content::GeolocationProviderImpl::StartProviders (this=0x7fff84080660,
    use_high_accuracy=false) at chromium/src/content/browser/geolocation/geolocation_provider_impl.cc:186
#2 0x00007fffbeb26cf2 in base::internal::RunnableAdapter<void (content::GeolocationProviderImpl::*)(bool)>::Run (
    this=0x7fff653714a0, object=0x7fff84080660, a1=@0x7fff84094388: false) at chromium/src/base/bind_internal.h:190
#3 0x00007fffbeb2697a in base::internal::InvokeHelper<false, void, base::internal::RunnableAdapter<void (content::GeolocationProviderImpl::*)(bool)>, void (content::GeolocationProviderImpl*, bool const&)>::MakeItSo(base::internal::RunnableAdapter<void (content::GeolocationProviderImpl::*)(bool)>, content::GeolocationProviderImpl*, bool const&) (
    runnable=..., a1=0x7fff84080660, a2=@0x7fff84094388: false) at chromium/src/base/bind_internal.h:898
#4 0x00007fffbeb262fd in base::internal::Invoker<2, base::internal::BindState<base::internal::RunnableAdapter<void (content::GeolocationProviderImpl::*)(bool)>, void (content::GeolocationProviderImpl*, bool), void (base::internal::UnretainedWrapper<content::GeolocationProviderImpl>, bool)>, void (content::GeolocationProviderImpl*, bool)>::Run(base::internal::BindStateBase*) (base=0x7fff84094360) at chromium/src/base/bind_internal.h:1253
#5 0x00007fffba722f98 in base::Callback<void ()>::Run() const (this=0x7fff65371808)
    at chromium/src/base/callback.h:401
#6 0x00007fffba7bb0e8 in base::MessageLoop::RunTask (this=0x7fff58000940, pending_task=...)
    at chromium/src/base/message_loop/message_loop.cc:511
#7 0x00007fffba7bb216 in base::MessageLoop::DeferOrRunPendingTask (this=0x7fff58000940, pending_task=...)
    at chromium/src/base/message_loop/message_loop.cc:523
#8 0x00007fffba7bb766 in base::MessageLoop::DoWork (this=0x7fff58000940)
    at chromium/src/base/message_loop/message_loop.cc:637
#9 0x00007fffba7ca2f5 in base::MessagePumpDefault::Run (this=0x7fff58000cf0, delegate=0x7fff58000940)
    at chromium/src/base/message_loop/message_pump_default.cc:32
#10 0x00007fffba7bac16 in base::MessageLoop::RunInternal (this=0x7fff58000940)
    at chromium/src/base/message_loop/message_loop.cc:461
#11 0x00007fffba7baabc in base::MessageLoop::RunHandler (this=0x7fff58000940)
    at chromium/src/base/message_loop/message_loop.cc:433
#12 0x00007fffba81bc8a in base::RunLoop::Run (this=0x7fff65371c50) at chromium/src/base/run_loop.cc:47
#13 0x00007fffba7ba1f8 in base::MessageLoop::Run (this=0x7fff58000940)
    at chromium/src/base/message_loop/message_loop.cc:321
#14 0x00007fffba86cd08 in base::Thread::Run (this=0x7fff84080668, message_loop=0x7fff58000940)
    at chromium/src/base/threading/thread.cc:172
#15 0x00007fffba86cf5f in base::Thread::ThreadMain (this=0x7fff84080668) at chromium/src/base/threading/thread.cc:225
#16 0x00007fffba85a608 in base::(anonymous namespace)::ThreadFunc (params=0x7fff9cb25960)
    at chromium/src/base/threading/platform_thread_posix.cc:80
#17 0x...

[Olivier Tilloy (osomon)]

The crash happens because GetAccessTokenStore()’s default implementation returns NULL.
We need to override ContentBrowserClient::CreateAccessTokenStore() in shared/browser/oxide_content_browser_client.h to instantiate a concrete implementation of an access token store.

[Olivier Tilloy (osomon)]

Blocked on the availability of a system request context (see bug #1268898).

[Bill Filler (bfiller)]

maps.google.com will cause the crash