Web Inspector: generate preview for the objects dumped into the console upon logging.

Web Inspector: generate preview for the objects dumped into the console upon logging.
https://bugs.webkit.org/show_bug.cgi?id=35801

Reviewed by Vsevolod Vlasov.

Source/WebCore:

As of today, dumping an object (array) into console will result in objects' properties being
read upon console object expansion (i.e. lazily). This means that dumping the same object while
mutating it will be hard to debug using the console.

This change starts generating abbreviated previews for objects / arrays at the moment of their
logging and passes this information along into the front-end. This only happens when the front-end
is already opened, it only works for console.log(), not live console interaction.

Covered by the existing console tests + collections test has been expanded to capture both: pre and post-
front-end opening scenarios.

* inspector/ConsoleMessage.cpp:
(WebCore::ConsoleMessage::addToFrontend):
* inspector/ConsoleMessage.h:
(ConsoleMessage):
* inspector/InjectedScript.cpp:
(WebCore::InjectedScript::wrapObject):
* inspector/InjectedScript.h:
(InjectedScript):
* inspector/InjectedScriptSource.js:
(.):
* inspector/Inspector.json:
* inspector/InspectorConsoleAgent.cpp:
(WebCore::InspectorConsoleAgent::enable):
(WebCore::InspectorConsoleAgent::addConsoleMessage):
* inspector/front-end/ConsoleMessage.js:
(WebInspector.ConsoleMessageImpl.prototype._format):
(WebInspector.ConsoleMessageImpl.prototype._formatParameter):
(WebInspector.ConsoleMessageImpl.prototype._formatParameterAsObject):
(WebInspector.ConsoleMessageImpl.prototype._formatParameterAsArrayOrObject):
(WebInspector.ConsoleMessageImpl.prototype._appendObjectPreview):
(WebInspector.ConsoleMessageImpl.prototype._formatParameterAsNode):
(WebInspector.ConsoleMessageImpl.prototype._formatParameterAsArray):
(WebInspector.ConsoleMessageImpl.prototype._printArray):
(WebInspector.ConsoleMessageImpl.prototype._formatAsArrayEntry):
(WebInspector.ConsoleMessageImpl.prototype._formatWithSubstitutionString):
* inspector/front-end/DOMExtension.js:
(Element.prototype.createTextChild):
* inspector/front-end/ObjectPropertiesSection.js:
(WebInspector.ObjectPropertiesSection):
* inspector/front-end/PropertiesSection.js:
* inspector/front-end/RemoteObject.js:
(WebInspector.RemoteObject):
(WebInspector.RemoteObject.fromPayload):
(WebInspector.RemoteObject.prototype.get previewProperties):
* inspector/front-end/Section.js:
* inspector/front-end/inspector.css:
(.console-group-messages .section .header .title):
(.section .console-formatted-node):
(.console-object-preview):
(.section .properties .name, .event-properties .name, .console-formatted-object .name):

LayoutTests:

* inspector/console/command-line-api-inspect-expected.txt:
* inspector/console/console-dir-expected.txt:
* inspector/console/console-eval-global-expected.txt:
* inspector/console/console-eval-global.html:
* inspector/console/console-format-collections-expected.txt:
* inspector/console/console-format-collections.html:
* inspector/console/console-format-expected.txt:
* inspector/console/console-format.html:
* inspector/console/console-log-document-proto-expected.txt:
* inspector/console/console-log-document-proto.html:
* inspector/console/console-log-toString-object-expected.txt:
* inspector/debugger/watch-expressions-panel-switch-expected.txt:
* inspector/elements/event-listener-sidebar-expected.txt:
* inspector/elements/event-listeners-about-blank-expected.txt:
* platform/chromium/inspector/console/console-dir-expected.txt:
* platform/chromium/inspector/console/console-eval-global-expected.txt: Removed.
* platform/chromium/inspector/console/console-format-collections-expected.txt:
* platform/chromium/inspector/console/console-format-expected.txt: Removed.
* platform/chromium/inspector/console/console-log-document-proto-expected.txt:
* platform/chromium/inspector/debugger/watch-expressions-panel-switch-expected.txt:
* platform/chromium/inspector/elements/event-listener-sidebar-expected.txt: Removed.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@125046 268f45cc-cd09-0410-ab3c-d52691b4dbfc