[Webkit-unassigned] [Bug 69423] New: Web Inspector: implement CompilerSourceMappingProvider.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=69423

           Summary: Web Inspector: implement
                    CompilerSourceMappingProvider.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: podivilov at chromium.org
                CC: timothy at apple.com, rik at webkit.org, keishi at webkit.org,
                    pmuellr at yahoo.com, joepeck at webkit.org,
                    pfeldman at chromium.org, yurys at chromium.org,
                    bweinstein at apple.com, apavlov at chromium.org,
                    loislo at chromium.org


Web Inspector: implement CompilerSourceMappingProvider.

CompilerSourceMappingProvider implements a cross-domain communication channel for loading source mappings and source files.
Front-end page can't send XHRs to source mapping server directly due to SOP restrictions. Instead, we inject an invisible iframe that is loaded from source mapping server and use window.postMessage to communicate with it.
iframe has a different origin and thus doesn't have access to front-end window.

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