Instructions:

I found a decision how to show all your passwords from Chromium. Tested on Chromium:

Version 40.0.2214.111 Ubuntu 14.04 (64-bit) - Passed

Version 43.0.2357.65 Built on 8.0, running on Debian 8.1 (64-bit) - Passed

Version 48.0.2564.82 Built on 8.3, running on Debian 8.3 (64-bit) - Passed

Version 50.0.2661.102 Ubuntu 16.04 (64-bit) - Passed

Version 51.0.2704.79 Built on 8.4, running on Debian 8.5 (64-bit) - Passed

I used js script found early in search.

Output format changed for ready to use in FireFox Export plugin Please install this plugin from https://addons.mozilla.org/en-Us/firefox/addon/password-exporter/

Output maked in format: "hostname","username","password","formSubmitURL","httpRealm","usernameField","passwordField"

Last 3 fields "httpRealm","usernameField","passwordField" filled empty because Chrome has no information about in his Chrome Password Manager.

1.Open in Chromium browser link to Chrome password manager: (chrome://settings-frame/passwords)

2.Open console (F12) and insert this js code:

For version before 51:

var out = "";
var out2 = "";
var pm = PasswordManager.getInstance();
var model = pm.savedPasswordsList_.dataModel;
var pl = pm.savedPasswordsList_;
for (i = 0; i < model.length; i++) {
	PasswordManager.requestShowPassword(i);
};
setTimeout(
		function() {
			out2 += '# Generated by Password Exporter; Export format 1.1; Encrypted: false\n';
			out2 += '"hostname","username","password","formSubmitURL","httpRealm","usernameField","passwordField"';
			for (i = 0; i < model.length; i++) {
				var item = pl.getListItemByIndex(i);
				out += "\n" + model.array_[i].origin
						+ "	" + model.array_[i].username
						+ "	" + item.childNodes[0].childNodes[2].childNodes[0].value;
				out2 += '\n"' + model.array_[i].origin + '","'
						+ model.array_[i].username + '","'
						+ item.childNodes[0].childNodes[2].childNodes[0].value.replace(/"/g, '""')
						+ '","' + model.array_[i].origin + '"," "," "," "';
			}
			console.log(out);
			document.body.innerText = out2;
		}, 2500);

For version 51 and after:

var out = "";
var out2 = "";
var pm = PasswordManager.getInstance();
var model = pm.savedPasswordsList_.dataModel;
var pl = pm.savedPasswordsList_;
for (i = 0; i < model.length; i++) {
	PasswordManager.requestShowPassword(i);
};
setTimeout(
		function() {
			out2 += '# Generated by Password Exporter; Export format 1.1; Encrypted: false\n';
			out2 += '"hostname","username","password","formSubmitURL","httpRealm","usernameField","passwordField"';
			for (i = 0; i < model.length; i++) {
				var item = pl.getListItemByIndex(i);
				out += "\n" + model.array_[i].url
						+ "	" + model.array_[i].username
						+ "	" + item.childNodes[0].childNodes[2].childNodes[0].value;
				out2 += '\n"' + model.array_[i].url + '","'
						+ model.array_[i].username + '","'
						+ item.childNodes[0].childNodes[2].childNodes[0].value.replace(/"/g, '""')
						+ '","' + model.array_[i].url + '"," "," "," "';
			}
			console.log(out);
			document.body.innerText = out2;
		}, 2500);

3.Now you see all your passwords in format i described early.

4.Copy all data to csv file and import to FireFox :)

5.Profit