UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safari/537.36 115Browser/7.0.0

Steps to reproduce the problem:
1.  Go to setting page, select "continue where you left off" in the On Startup section.
2. Open tens of tabs or more to make the machine bog down.
3. Quit browser quickly with Command+Q, or quit in the chrome menu.
4. Chrome will crash sometimes, not easy to reproduce.

What is the expected behavior?
Don't crash.

What went wrong?
I get the crash report, maybe something wrong in the UnloadController class.
The 115Browser actually use Chromium, it's basically all chromium stuff.

--------------------------------------------------------------------------------------
Process:               115Browser [15231]
Path:                  /Applications/115Browser.app/Contents/MacOS/115Browser
Identifier:            com.115.115browser
Version:               7.0.0.1 (0.1)
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           115Browser [15231]
User ID:               501

Date/Time:             2016-05-18 09:37:38.869 -0700
OS Version:            Mac OS X 10.11.4 (15E65)
Report Version:        11
Anonymous UUID:        78128C37-9CC0-82F1-7C60-EF554F2ADA7F

Sleep/Wake UUID:       EE39DE11-25EB-4BCF-B0C9-BA293B7467BD

Time Awake Since Boot: 370000 seconds
Time Since Wake:       570 seconds

System Integrity Protection: enabled

Crashed Thread:        0  CrBrowserMain  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BREAKPOINT (SIGTRAP)
Exception Codes:       0x0000000000000002, 0x0000000000000000

Thread 0 Crashed:: CrBrowserMain  Dispatch queue: com.apple.main-thread
0   com.115.115browser.framework  	0x000000010941d6b1 base::debug::BreakDebugger() + 17
1   com.115.115browser.framework  	0x0000000109437157 logging::LogMessage::~LogMessage() + 1431
2   com.115.115browser.framework  	0x000000010c6f9dd5 content::NotificationServiceImpl::RemoveObserver(content::NotificationObserver*, int, content::NotificationSource const&) + 181
3   com.115.115browser.framework  	0x000000010c2d01ee non-virtual thunk to chrome::UnloadController::TabDetachedAt(content::WebContents*, int) + 62
4   com.115.115browser.framework  	0x000000010c2bbaa9 TabStripModel::DetachWebContentsAt(int) + 697
5   com.115.115browser.framework  	0x000000010c83cfb6 content::WebContentsImpl::~WebContentsImpl() + 2502
6   com.115.115browser.framework  	0x000000010c83d5be content::WebContentsImpl::~WebContentsImpl() + 14
7   com.115.115browser.framework  	0x000000010c2c0a8b TabStripModel::InternalCloseTab(content::WebContents*, int, bool) + 379
8   com.115.115browser.framework  	0x000000010c2be319 TabStripModel::InternalCloseTabs(std::__1::vector<int, std::__1::allocator<int> > const&, unsigned int) + 2601
9   com.115.115browser.framework  	0x000000010c2bd8b6 TabStripModel::CloseAllTabs() + 150
10  com.115.115browser.framework  	0x000000010c27e84b Browser::OnWindowClosing() + 315
11  com.115.115browser.framework  	0x000000010c2cf869 chrome::UnloadController::CanCloseContents(content::WebContents*) + 57
12  com.115.115browser.framework  	0x000000010c281919 non-virtual thunk to Browser::CloseContents(content::WebContents*) + 73
13  com.115.115browser.framework  	0x000000010c76b344 content::RenderViewHostImpl::OnMessageReceived(IPC::Message const&) + 1460
14  com.115.115browser.framework  	0x000000010c771c7a content::RenderWidgetHostImpl::OnMessageReceived(IPC::Message const&) + 58
15  com.115.115browser.framework  	0x000000010c75ff69 content::RenderProcessHostImpl::OnMessageReceived(IPC::Message const&) + 1001
16  com.115.115browser.framework  	0x0000000109e541e8 IPC::ChannelProxy::Context::OnDispatchMessage(IPC::Message const&) + 120
17  com.115.115browser.framework  	0x000000010941e93a base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask const&) + 202
18  com.115.115browser.framework  	0x0000000109441979 base::MessageLoop::RunTask(base::PendingTask const&) + 489
19  com.115.115browser.framework  	0x0000000109441eb8 base::MessageLoop::DoWork() + 632
20  com.115.115browser.framework  	0x0000000109413811 base::MessagePumpCFRunLoopBase::RunWork() + 49
21  com.115.115browser.framework  	0x0000000109437d1a base::mac::CallWithEHFrame(void () block_pointer) + 10
22  com.115.115browser.framework  	0x0000000109413214 base::MessagePumpCFRunLoopBase::RunWorkSource(void*) + 68
23  com.apple.CoreFoundation      	0x00007fff9b1a6881 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
24  com.apple.CoreFoundation      	0x00007fff9b185fbc __CFRunLoopDoSources0 + 556
25  com.apple.CoreFoundation      	0x00007fff9b1854df __CFRunLoopRun + 927
26  com.apple.CoreFoundation      	0x00007fff9b184ed8 CFRunLoopRunSpecific + 296
27  com.apple.HIToolbox           	0x00007fff98509935 RunCurrentEventLoopInMode + 235
28  com.apple.HIToolbox           	0x00007fff9850976f ReceiveNextEventCommon + 432
29  com.apple.HIToolbox           	0x00007fff985095af _BlockUntilNextEventMatchingListInModeWithFilter + 71
30  com.apple.AppKit              	0x00007fff939f9efa _DPSNextEvent + 1067
31  com.apple.AppKit              	0x00007fff939f932a -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
32  com.apple.AppKit              	0x00007fff939ede84 -[NSApplication run] + 682
33  com.115.115browser.framework  	0x00000001094140af base::MessagePumpNSApplication::DoRun(base::MessagePump::Delegate*) + 351
34  com.115.115browser.framework  	0x0000000109413664 base::MessagePumpCFRunLoopBase::Run(base::MessagePump::Delegate*) + 100
35  com.115.115browser.framework  	0x0000000109455163 base::RunLoop::Run() + 99
36  com.115.115browser.framework  	0x0000000108f15c95 ChromeBrowserMainParts::MainMessageLoopRun(int*) + 181
37  com.115.115browser.framework  	0x000000010c560b37 content::BrowserMainLoop::RunMainMessageLoopParts() + 55
38  com.115.115browser.framework  	0x000000010c563632 content::BrowserMainRunnerImpl::Run() + 18
39  com.115.115browser.framework  	0x000000010c55c5cd content::BrowserMain(content::MainFunctionParams const&) + 173
40  com.115.115browser.framework  	0x00000001093d34bc content::ContentMainRunnerImpl::Run() + 92
41  com.115.115browser.framework  	0x00000001093d2986 content::ContentMain(content::ContentMainParams const&) + 54
42  com.115.115browser.framework  	0x0000000108e41e92 ChromeMain + 66
43  com.115.115browser            	0x0000000108bc4d52 main + 530
44  com.115.115browser            	0x0000000108bc4b34 start + 52

Crashed report ID: no

How much crashed? Whole browser

Is it a problem with a plugin? No 

Did this work before? N/A 

Chrome version: 49.0.2623.75  Channel: dev
OS Version: OS X 10.11.4
Flash Version: Shockwave Flash 21.0 r0