This seems to be timing out on Linux (asan) and Mac.

[ RUN      ] InlineLoginUISafeIframeBrowserTest.LoadSuccessContinueURL
[78934:5635:0512/020151.361884:WARNING:notification_platform_bridge_mac.mm(517)] AlertNotificationService: XPC connection invalidated.
[78934:60163:0512/020151.344036:WARNING:mac_util.mm(222)] Failed to set backup exclusion for file '/private/var/folders/9x/6c6sv3cj4j53wzpzthbp4ksm0000gm/T/.org.chromium.Chromium.WBa8m0/dBQQHAU/Default/History': Error Domain=NSOSStatusErrorDomain Code=-50 "The operation couldn?t be completed. (OSStatus error -50.)" (paramErr: error in user parameter list) (-50)
[78934:60163:0512/020151.598178:WARNING:mac_util.mm(222)] Failed to set backup exclusion for file '/private/var/folders/9x/6c6sv3cj4j53wzpzthbp4ksm0000gm/T/.org.chromium.Chromium.WBa8m0/dBQQHAU/Default/Favicons': Error Domain=NSOSStatusErrorDomain Code=-50 "The operation couldn?t be completed. (OSStatus error -50.)" (paramErr: error in user parameter list) (-50)
[78947:771:0512/020151.830981:WARNING:vt_video_decode_accelerator_mac.cc(178)] Failed to create VTDecompressionSession: Error Domain=NSOSStatusErrorDomain Code=-8973 "The operation couldn?t be completed. (OSStatus error -8973.)" (codecOpenErr) (-8973)
[78947:771:0512/020151.849638:WARNING:vt_video_decode_accelerator_mac.cc(200)] Failed to create hardware VideoToolbox session
[78947:771:0512/020151.960036:ERROR:vt_video_encode_accelerator_mac.cc(495)]  VTCompressionSessionCreate failed: -12908
[78934:103731:0512/020155.327389:WARNING:embedded_test_server.cc(219)] Request not handled. Returning 404: /ServiceLogin?skipvpage=true&sarp=1&rm=hide&continue=chrome-extension%3A%2F%2Fmfffpogegjflfpflabcdkioaeobkgjik%2Fsuccess.html%3Faccess_point%3D0%26source%3D0&service=chromiumsync&hl=en-US
[78934:771:0512/020155.482399:WARNING:CONSOLE(238)] "<webview>: The load has aborted with error -20: ERR_BLOCKED_BY_CLIENT.", source: extensions::webViewEvents (238)
[78934:771:0512/020155.789198:INFO:CONSOLE(0)] "Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('http://127.0.0.1:55492') does not match the recipient window's origin ('null').", source:  (0)
[78934:771:0512/020155.817652:WARNING:CONSOLE(238)] "<webview>: The load has aborted with error -3: ERR_ABORTED.", source: extensions::webViewEvents (238)
[78934:103731:0512/020155.820877:WARNING:embedded_test_server.cc(219)] Request not handled. Returning 404: /ServiceLogin?skipvpage=true&sarp=1&rm=hide&continue=chrome-extension%3A%2F%2Fmfffpogegjflfpflabcdkioaeobkgjik%2Fsuccess.html%3Faccess_point%3D0%26source%3D0&service=chromiumsync&hl=en-US
[78934:771:0512/020155.885877:WARNING:CONSOLE(238)] "<webview>: The load has aborted with error -20: ERR_BLOCKED_BY_CLIENT.", source: extensions::webViewEvents (238)
[78934:771:0512/020155.940129:INFO:CONSOLE(0)] "Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('http://127.0.0.1:55492') does not match the recipient window's origin ('null').", source:  (0)
BrowserTestBase received signal: Terminated: 15. Backtrace:
0   browser_tests                       0x00000001043acc6c base::debug::StackTrace::StackTrace(unsigned long) + 28
1   browser_tests                       0x0000000104c539e1 content::(anonymous namespace)::DumpStackTraceSignalHandler(int) + 207
2   libsystem_platform.dylib            0x00007fff947f95aa _sigtramp + 26
3   ???                                 0x0000000000000000 0x0 + 0
4   CoreFoundation                      0x00007fff9082cf15 __CFRunLoopServiceMachPort + 181
5   CoreFoundation                      0x00007fff9082c539 __CFRunLoopRun + 1161
6   CoreFoundation                      0x00007fff9082be75 CFRunLoopRunSpecific + 309
7   HIToolbox                           0x00007fff8a317a0d RunCurrentEventLoopInMode + 226
8   HIToolbox                           0x00007fff8a3177b7 ReceiveNextEventCommon + 479
9   HIToolbox                           0x00007fff8a3175bc _BlockUntilNextEventMatchingListInModeWithFilter + 65
10  AppKit                              0x00007fff93c6f24e _DPSNextEvent + 1434
11  AppKit                              0x00007fff93c6e89b -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122
12  browser_tests                       0x0000000104553d93 __71-[BrowserCrApplication nextEventMatchingMask:untilDate:inMode:dequeue:]_block_invoke + 63
13  browser_tests                       0x00000001043d88aa base::mac::CallWithEHFrame(void () block_pointer) + 10
14  browser_tests                       0x0000000104553cee -[BrowserCrApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 156
15  AppKit                              0x00007fff93c6299c -[NSApplication run] + 553
16  browser_tests                       0x00000001043f4fb7 base::MessagePumpNSApplication::DoRun(base::MessagePump::Delegate*) + 359
17  browser_tests                       0x00000001043f4347 base::MessagePumpCFRunLoopBase::Run(base::MessagePump::Delegate*) + 119
18  browser_tests                       0x00000001043ef192 base::MessageLoop::RunHandler() + 290
19  browser_tests                       0x000000010442b3b7 base::RunLoop::Run() + 151
20  browser_tests                       0x0000000104c9747d content::RunThisRunLoop(base::RunLoop*) + 53
21  browser_tests                       0x0000000104c97f6d content::MessageLoopRunner::Run() + 119
22  browser_tests                       0x0000000104c57a6f content::DOMMessageQueue::WaitForMessage(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*) + 151
23  browser_tests                       0x0000000104c56596 content::(anonymous namespace)::ExecuteScriptHelper(content::RenderFrameHost*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool, std::__1::unique_ptr<base::Value, std::__1::default_delete<base::Value> >*) + 224
24  browser_tests                       0x0000000104c5642e content::ExecuteScriptAndExtractString(content::ToRenderFrameHost const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*) + 126
25  browser_tests                       0x0000000102170447 InlineLoginUISafeIframeBrowserTest_LoadSuccessContinueURL_Test::RunTestOnMainThread() + 233


The linux/asan failures are not symbolized :/

Test added for  Issue 709117  in r467739. Disabling - https://codereview.chromium.org/2882153002

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3f5b99e8adc4118ac88dbbb1964144c70097f4cf

commit 3f5b99e8adc4118ac88dbbb1964144c70097f4cf
Author: tapted <tapted@chromium.org>
Date: Mon May 15 07:26:33 2017

Disable InlineLoginUISafeIframeBrowserTest.LoadSuccessContinueURL. Flaky.

Flakily times out waiting for ExecuteScriptAndExtractString to return.

BUG= 722164 
TBR=msarda@chromium.org

Review-Url: https://codereview.chromium.org/2882153002
Cr-Commit-Position: refs/heads/master@{#471688}

[modify] https://crrev.com/3f5b99e8adc4118ac88dbbb1964144c70097f4cf/chrome/browser/ui/webui/signin/inline_login_ui_browsertest.cc

 Issue 721843  has been merged into this issue.

 Issue 721337  has been merged into this issue.

I managed to repro this failure on Linux asan locally. The one difference that I found was that in the failing case, I see the following line in the logs:
"[78934:771:0512/020155.817652:WARNING:CONSOLE(238)] "<webview>: The load has aborted with error -3: ERR_ABORTED.", source: extensions::webViewEvents (238)"

I need to understand what load is blocked and why.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/844c8727744ff0b46ae67786feaac9b81f790b10

commit 844c8727744ff0b46ae67786feaac9b81f790b10
Author: msarda <msarda@chromium.org>
Date: Tue May 30 15:10:14 2017

Avoid failed requests in inline login UI browser tests.

This CL change the inline login UI browser tests to respond with
an empty HTML response when there is request to load any GAIA login page.
This ensures that loading the GAIA login page will not be aborted.

BUG= 722164 

Review-Url: https://codereview.chromium.org/2912103002
Cr-Commit-Position: refs/heads/master@{#475529}

[modify] https://crrev.com/844c8727744ff0b46ae67786feaac9b81f790b10/chrome/browser/ui/webui/signin/inline_login_ui_browsertest.cc