Reviewed by Timothy Hatcher.

        Web Inspector: Get rid of synchronous debuggerEnabled, profilerEnabled calls.

        https://bugs.webkit.org/show_bug.cgi?id=32331

        * inspector/InspectorBackend.cpp:
        * inspector/InspectorBackend.h:
        * inspector/InspectorBackend.idl:
        * inspector/front-end/BreakpointsSidebarPane.js:
        (WebInspector.BreakpointsSidebarPane.prototype.addBreakpoint):
        (WebInspector.BreakpointsSidebarPane.prototype.removeBreakpoint):
        (WebInspector.BreakpointsSidebarPane.prototype._breakpointEnableChanged):
        * inspector/front-end/ProfilesPanel.js:
        (WebInspector.ProfilesPanel):
        (WebInspector.ProfilesPanel.prototype.profilerWasEnabled):
        (WebInspector.ProfilesPanel.prototype.profilerWasDisabled):
        (WebInspector.ProfilesPanel.prototype._updateInterface):
        (WebInspector.ProfilesPanel.prototype._enableProfiling):
        (WebInspector.ProfilesPanel.prototype._toggleProfiling):
        * inspector/front-end/ScriptsPanel.js:
        (WebInspector.ScriptsPanel):
        (WebInspector.ScriptsPanel.prototype.debuggerWasEnabled):
        (WebInspector.ScriptsPanel.prototype.debuggerWasDisabled):
        (WebInspector.ScriptsPanel.prototype.reset):
        (WebInspector.ScriptsPanel.prototype.canShowSourceLine):
        (WebInspector.ScriptsPanel.prototype._updateDebuggerButtons):
        (WebInspector.ScriptsPanel.prototype._enableDebugging):
        (WebInspector.ScriptsPanel.prototype._toggleDebugging):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@55464 268f45cc-cd09-0410-ab3c-d52691b4dbfc