Update to Chromium revision b0aa1fb5 (#296183).

- Restore CefRenderHandler::OnScrollOffsetChanged.
- Add new RT_PING and RT_SERVICE_WORKER resource type values.
- The resource type for image sub-resource loads has changed from RT_IMAGE to RT_PREFETCH (this is a regression, see http://crbug.com/415253#c23).
- Add a patch to fix a crash in Scheduler::swapQueuesRunPendingTasks* (http://crbug.com/415478).
- Add documentation for cef_key_event_type_t values.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1846 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

patch/patches/browser_web_contents_1257.patch

@@ -1,8 +1,8 @@
 diff --git web_contents_impl.cc web_contents_impl.cc
-index f1a9d02..243bbc8 100644
+index 592a72a..caf9331 100644
 --- web_contents_impl.cc
 +++ web_contents_impl.cc
-@@ -1147,22 +1147,29 @@ void WebContentsImpl::Init(const WebContents::CreateParams& params) {
+@@ -1195,22 +1195,29 @@ void WebContentsImpl::Init(const WebContents::CreateParams& params) {
        params.browser_context, params.site_instance, params.routing_id,
        params.main_frame_routing_id);
  
@@ -48,7 +48,7 @@ index f1a9d02..243bbc8 100644
    }
    CHECK(render_view_host_delegate_view_);
    CHECK(view_.get());
-@@ -1479,6 +1486,9 @@ void WebContentsImpl::CreateNewWindow(
+@@ -1529,6 +1536,9 @@ void WebContentsImpl::CreateNewWindow(
        static_cast<SessionStorageNamespaceImpl*>(session_storage_namespace);
    CHECK(session_storage_namespace_impl->IsFromContext(dom_storage_context));
  
@@ -58,7 +58,7 @@ index f1a9d02..243bbc8 100644
    if (delegate_ &&
        !delegate_->ShouldCreateWebContents(this,
                                            route_id,
-@@ -1486,7 +1496,9 @@ void WebContentsImpl::CreateNewWindow(
+@@ -1536,7 +1546,9 @@ void WebContentsImpl::CreateNewWindow(
                                            params.frame_name,
                                            params.target_url,
                                            partition_id,
@@ -69,7 +69,7 @@ index f1a9d02..243bbc8 100644
      if (route_id != MSG_ROUTING_NONE &&
          !RenderViewHost::FromID(render_process_id, route_id)) {
        // If the embedder didn't create a WebContents for this route, we need to
-@@ -1506,6 +1518,8 @@ void WebContentsImpl::CreateNewWindow(
+@@ -1556,6 +1568,8 @@ void WebContentsImpl::CreateNewWindow(
    create_params.main_frame_routing_id = main_frame_route_id;
    create_params.opener = this;
    create_params.opener_suppressed = params.opener_suppressed;