This bug is specific to Chrome_OS and labeling it accordingly. Please find additional from below url :

https://crash.corp.google.com/browse?q=custom_data.ChromeCrashProto.ptype%3D%27browser%27%20AND%20custom_data.ChromeCrashProto.magic_signature_1.name%3D%27extensions%3A%3AMediaGalleriesGetMetadataFunction%3A%3AConstructNextBlob%27&ignore_case=false&enable_rewrite=true&omit_field_name=&omit_field_value=&omit_field_opt=%3D#samplereports:5,productversion:1000


Note : The crash last seen on Desktop version of Chrome Windows(55.0.2842.0) and Linux(52.0.2743.82)

This has also come up on issue 661656:

http://crash/0e60298f00000000
Chrome 56.0.2920.0


Thread 0 CRASHED [SIGSEGV @ 0x00000000 ]
0x00007fd310a7f63c	(chrome -media_galleries_api.cc:727 )	extensions::MediaGalleriesGetMetadataFunction::ConstructNextBlob(std::unique_ptr<base::DictionaryValue, std::default_delete<base::DictionaryValue> >, std::unique_ptr<std::vector<metadata::AttachedImage, std::allocator<metadata::AttachedImage> >, std::default_delete<std::vector<metadata::AttachedImage, std::allocator<metadata::AttachedImage> > > >, std::unique_ptr<std::vector<std::string, std::allocator<std::string> >, std::default_delete<std::vector<std::string, std::allocator<std::string> > > >, std::unique_ptr<content::BlobHandle, std::default_delete<content::BlobHandle> >)
0x00007fd310a7deb2	(chrome -bind_internal.h:214 )	base::internal::Invoker<base::internal::BindState<void (extensions::MediaGalleriesGetMetadataFunction::*)(std::unique_ptr<base::DictionaryValue, std::default_delete<base::DictionaryValue> >, std::unique_ptr<std::vector<metadata::AttachedImage, std::allocator<metadata::AttachedImage> >, std::default_delete<std::vector<metadata::AttachedImage, std::allocator<metadata::AttachedImage> > > >, std::unique_ptr<std::vector<std::string, std::allocator<std::string> >, std::default_delete<std::vector<std::string, std::allocator<std::string> > > >, std::unique_ptr<content::BlobHandle, std::default_delete<content::BlobHandle> >), scoped_refptr<extensions::MediaGalleriesGetMetadataFunction>, base::internal::PassedWrapper<std::unique_ptr<base::DictionaryValue, std::default_delete<base::DictionaryValue> > >, base::internal::PassedWrapper<std::unique_ptr<std::vector<metadata::AttachedImage, std::allocator<metadata::AttachedImage> >, std::default_delete<std::vector<metadata::AttachedImage, std::allocator<metadata::AttachedImage> > > > >, base::internal::PassedWrapper<std::unique_ptr<std::vector<std::string, std::allocator<std::string> >, std::default_delete<std::vector<std::string, std::allocator<std::string> > > > > >, void (std::unique_ptr<content::BlobHandle, std::default_delete<content::BlobHandle> >)>::Run(base::internal::BindStateBase*, std::unique_ptr<content::BlobHandle, std::default_delete<content::BlobHandle> >&&)
0x00007fd30bdc1bd8	(chrome -callback.h:64 )	void base::internal::ReplyAdapter<std::unique_ptr<base::DictionaryValue, std::default_delete<base::DictionaryValue> >, std::unique_ptr<base::DictionaryValue, std::default_delete<base::DictionaryValue> > >(base::Callback<void (std::unique_ptr<base::DictionaryValue, std::default_delete<base::DictionaryValue> >), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, std::unique_ptr<base::DictionaryValue, std::default_delete<base::DictionaryValue> >*)
0x00007fd30d385b9d	(chrome -callback.h:64 )	PostTaskAndReplyRelay::RunReplyAndSelfDestruct
0x00007fd30bae0f24	(chrome -callback.h:47 )	base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*)
0x00007fd30bacf259	(chrome -message_loop.cc:413 )	base::MessageLoop::DoWork()
0x00007fd30bacf972	(chrome -message_pump_libevent.cc:218 )	base::MessagePumpLibevent::Run(base::MessagePump::Delegate*)
0x00007fd30d370797	(chrome -run_loop.cc:35 )	base::RunLoop::Run()
0x00007fd30d0532c4	(chrome -chrome_browser_main.cc:2010 )	ChromeBrowserMainParts::MainMessageLoopRun(int*)
0x00007fd30c70f6fa	(chrome -browser_main_loop.cc:977 )	content::BrowserMainLoop::RunMainMessageLoopParts()
0x00007fd30c711314	(chrome -browser_main_runner.cc:141 )	content::BrowserMainRunnerImpl::Run()
0x00007fd30c70bdab	(chrome -browser_main.cc:46 )	content::BrowserMain(content::MainFunctionParams const&)
0x00007fd30cff5fe0	(chrome -content_main_runner.cc:774 )	content::ContentMainRunnerImpl::Run()
0x00007fd30cff4c3a	(chrome -content_main.cc:20 )	content::ContentMain(content::ContentMainParams const&)
0x00007fd30bd21eb5	(chrome -chrome_main.cc:97 )	ChromeMain
0x00007fd30939bfb5	(libc-2.19.so -libc-start.c:292 )	__libc_start_main
0x00007fd30bd21cff	(chrome + 0x011c5cff )	_start
0x00007ffdea31ef97