GitLab

Revert of Fix for race condition where print preview hangs when attempting to print a PDF that hasn't loaded. (https://codereview.chromium.org/427723004/)

Reason for revert:
The changes fix an issue, but cause a more serious one. 

crbug.com/402402

Original issue's description:
> Fix for race condition where print preview hangs when attempting to print a PDF that hasn't loaded.
> 
> If |type| in RequestPrintPreview() equals PRINT_PREVIEW_USER_INITIATED_ENTIRE_FRAME and |is_loading_| is true, RequestPrintPreview() returns,
> then is called again, right after |is_loading_| is set to false in DidStopLoading(). 
> 
> 
> BUG=376969
> TEST=See bug for steps to reproduce.
> 
> Additional way to reproduce:
> Build blink_tests and browser_tests in out/Release. Then in src/webkit/tools/layout_tests run this command:
> ./run_webkit_tests.py --platform browser_test.linux source_pdf/
> 
> you can replace linux with win or mac depending on your platform.
> 
> The program will attempt to save a PDF as a PDF through print preview. It will eventually fail because Print Preview will hang due to this bug.
> If you want visual confirmation that this will happen open:
> src/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/browser_test_driver.py.
> 
> Then add this line of code to the function cmd_line.
> cmd.append('--enable-pixel-output-in-tests')
> 
> Then run the script again. Enabling pixel output will also make it significantly more likely for the bug to occur.
> Its also more likely to happen on windows for some reason.
> 
> This is how I came across the bug.
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=287982

Review URL: https://codereview.chromium.org/463123004

Cr-Commit-Position: refs/heads/master@{#289181}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289181 0039d316-1c4b-4281-b951-d872f2087c98