This crash is starting seen from M64 #64.0.3282.39. Below link gives in details of the number of instances in which the crash has occurred for associated builds:

https://crash.corp.google.com/browse?q=product.name%3D%27Chrome_Mac%27%20%20AND%20expanded_custom_data.ChromeCrashProto.ptype%3D%27browser%27%20AND%20expanded_custom_data.ChromeCrashProto.magic_signature_1.name%3D%27%5BCocoa%20Zombie%5D%20-%5BPageInfoBubbleController%20onPermissionChanged%3Ato%3A%5D%27#-samplereports,productversion:1000,-magicsignature:50,-magicsignature2:50,-stablesignature:50,-magicsignaturesorted:50

Note:
=====
1) This is a browser crash listed under stable build 65.0.3325.181 for Mac on 10 different client ID's.
2) Currently this crash is ranked as number #19 with 10 instances
3) This crash is seen only on Mac platform
4) No crash instances are seen on latest beta and dev channels as of now
5) Filing this issue for tracking purpose, Please dupe it if this issue is similar to bug 822427

spqchan@ Could you please take a look in to this issue?

Thanks!

Users experienced this crash on the following builds:

Mac Canary 67.0.3377.0 -  0.16 CPM, 1 reports, 1 clients (signature [Uncaught NSException] NSFileHandleOperationException reason *** -[NSConcreteFileHandle writeData:]: Broken pipe)

If this update was incorrect, please add "Fracas-Wrong" label to prevent future updates.

- Go/Fracas

firstexception_bt:

0x0233162c [Google Chrome Framework -	 safe_conversions.h:180] base::debug::StackTrace::StackTrace(unsigned long)
0x01f5478d [Google Chrome Framework -	 exception_processor.mm:124] chrome::ObjcExceptionPreprocessor(objc_object*)
0x00014c76 [libobjc.A.dylib +	 0x14c76] objc_exception_throw
0x0019cd7d [CoreFoundation +	 0x19cd7d] +[NSException raise:format:]
0x000ac22a [Foundation +	 0xac22a] -[NSConcreteFileHandle writeData:]
0x00001bd6 [KeystoneRegistration -	 KSNonBlockingIO.m:182] -[KSIOCancelFlag cancel]
0x00008afa [KeystoneRegistration -	 KSRegistrationAction.m:286] -[KSRegistrationAction cleanupTask]
0x0009aedc [CoreFoundation +	 0x9aedc] __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__
0x0009adaa [CoreFoundation +	 0x9adaa] _CFXRegistrationPost
0x0009aae1 [CoreFoundation +	 0x9aae1] ___CFXNotificationPost_block_invoke
0x00058880 [CoreFoundation +	 0x58880] -[_CFXNotificationRegistrar find:object:observer:enumerator:]
0x000579b7 [CoreFoundation +	 0x579b7] _CFXNotificationPost
0x000068c7 [Foundation +	 0x68c7] -[NSNotificationCenter postNotificationName:object:userInfo:]
0x0001bda8 [KeystoneRegistration -	 KSIOThread.m:405] -[KSIOThread handleMachMessage:]
0x0009090c [Foundation +	 0x9090c] __NSFireMachPort
0x0008e56b [CoreFoundation +	 0x8e56b] __CFMachPortPerform
0x0008e3f9 [CoreFoundation +	 0x8e3f9] __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__
0x0008e345 [CoreFoundation +	 0x8e345] __CFRunLoopDoSource1
0x00085f00 [CoreFoundation +	 0x85f00] __CFRunLoopRun
0x00085153 [CoreFoundation +	 0x85153] CFRunLoopRunSpecific
0x0002fd96 [HIToolbox +	 0x2fd96] RunCurrentEventLoopInMode
0x0002fb06 [HIToolbox +	 0x2fb06] ReceiveNextEventCommon
0x0002f884 [HIToolbox +	 0x2f884] _BlockUntilNextEventMatchingListInModeWithFilter
0x00041a73 [AppKit +	 0x41a73] _DPSNextEvent
0x007d7e34 [AppKit +	 0x7d7e34] -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:]
0x01ebacc0 [Google Chrome Framework -	 chrome_browser_application_mac.mm:233] __71-[BrowserCrApplication nextEventMatchingMask:untilDate:inMode:dequeue:]_block_invoke
0x0229648a [Google Chrome Framework +	 0x229648a] base::mac::CallWithEHFrame(void () block_pointer)
0x01ebabf4 [Google Chrome Framework -	 chrome_browser_application_mac.mm:238] -[BrowserCrApplication nextEventMatchingMask:untilDate:inMode:dequeue:]
0x00036885 [AppKit +	 0x36885] -[NSApplication run]
0x022a680c [Google Chrome Framework -	 message_pump_mac.mm:824] base::MessagePumpNSApplication::DoRun(base::MessagePump::Delegate*)
0x022a538e [Google Chrome Framework -	 message_pump_mac.mm:306] base::MessagePumpCFRunLoopBase::Run(base::MessagePump::Delegate*)
0x022c7ec5 [Google Chrome Framework -	 run_loop.cc:108] <name omitted>
0x01ec176b [Google Chrome Framework -	 atomic:925] ChromeBrowserMainParts::MainMessageLoopRun(int*)
0x00aa77e4 [Google Chrome Framework -	 browser_main_loop.cc:1036] content::BrowserMainLoop::RunMainMessageLoopParts()
0x00aa9f32 [Google Chrome Framework -	 memory:2603] content::BrowserMainRunnerImpl::Run()
0x00aa429b [Google Chrome Framework -	 browser_main.cc:47] content::BrowserMain(content::MainFunctionParams const&)
0x01e753f8 [Google Chrome Framework -	 content_main_runner_impl.cc:596] content::ContentMainRunnerImpl::Run(bool)
0x0372537d [Google Chrome Framework -	 main.cc:472] service_manager::Main(service_manager::MainParams const&)
0x01e744a4 [Google Chrome Framework -	 content_main.cc:19] content::ContentMain(content::ContentMainParams const&)
0x00003af3 [Google Chrome Framework -	 chrome_main.cc:0] ChromeMain
0x00000dd1 [Google Chrome -	 chrome_exe_main_mac.cc:105] main
0x00001015 [libdyld.dylib +	 0x1015] start

Mac triage: assigning keystone bug to norberg@ cc borisv@ :)

***Mass UI Triage***