and stop debugging of the inspected page.

Reviewed by Adam Roben.

* English.lproj/InspectorLocalizedStrings.js: Adds the two new tooltip strings.
* page/InspectorController.cpp:
(WebCore::debuggerAttached): Call InspectorController::debuggerAttached.
(WebCore::InspectorController::InspectorController): Initialize
m_debuggerAttached to false.
(WebCore::InspectorController::windowScriptObjectAvailable): Add the debuggerAttached
property to the InspectorController class.
(WebCore::InspectorController::startDebuggingAndReloadInspectedPage):
Set m_debuggerAttached to true.
(WebCore::InspectorController::stopDebugging): Set m_debuggerAttached to false.
* page/InspectorController.h:
* page/inspector/Images/debuggingButtons.png: Added.
* page/inspector/ScriptsPanel.js:
(WebInspector.ScriptsPanel): Disable the pause button. Create the debugging
button and setup the id, className and event listener. Call reset.
(WebInspector.ScriptsPanel.prototype.get statusBarItems): Return an array
(WebInspector.ScriptsPanel.prototype.reset): Call _updateDebuggerButtons.
(WebInspector.ScriptsPanel.prototype._updateDebuggerButtons): Adjust the title of
the debugging button to match what will happen when clicked. Change the style class,
and toggle the disabled state of the pause button.
(WebInspector.ScriptsPanel.prototype._toggleDebugging): Start or stop debugging
depending on InspectorController.debuggerAttached().
* page/inspector/inspector.css: Added style rules for the debugger button.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@32396 268f45cc-cd09-0410-ab3c-d52691b4dbfc