Fix determination of the top-level resource

[Keith Rollin]

When loading the resources associated with a page, the Networking process needs to know the main resource for the main frame. It uses this information to keep track of page loads and the resources that are loaded in those pages. By keeping track of this information, WebKit can track and report difficult (slow or incomplete) resource loads and their impact on the overall page.

The initial determination of the top resource only looked at whether the resource was the "main" resource of a frame or not. However, this determination was insufficient, and would confuse the tracking mechanism when sub-frames also had main frames. Therefore, augment the test by also looking to see if the hosting frame is the main frame.

[Keith Rollin]

<rdar://problem/50780648>

[Keith Rollin]

Created attachment 380053 [details]
Patch

[youenn fablet]

Comment on attachment 380053 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=380053&action=review

> Source/WebKit/NetworkProcess/NetworkResourceLoader.cpp:171
> +    m_networkActivityTracker = m_connection->startTrackingResourceLoad(m_parameters.webPageID, m_parameters.identifier, isMainResource() && isMainFrameLoad());

if isMainFrameLoad() is true, isMainResource() should also be true.
I think we can remove the isMainResource() check.

[Keith Rollin]

Created attachment 380248 [details]
Made suggested change.

[WebKit Commit Bot]

Comment on attachment 380248 [details]
Made suggested change.

Clearing flags on attachment: 380248

Committed r250745: <https://trac.webkit.org/changeset/250745>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.