Web Inspector: remember the last dock option so that user could toggle between dock to bottom and right
https://bugs.webkit.org/show_bug.cgi?id=98255

Reviewed by Vsevolod Vlasov.

- Introduced DockController.js that covers the dock mechanics
- Removed dock orientation from the settings
- Storing the last dock option to present it as default
- Simplified the multi-option status bar button

* WebCore.gypi:
* WebCore.vcproj/WebCore.vcproj:
* inspector/compile-front-end.py:
* inspector/front-end/DockController.js: Added.
(WebInspector.DockController):
(WebInspector.DockController.prototype.get element):
(WebInspector.DockController.prototype.setDocked.set if):
(WebInspector.DockController.prototype.setDocked):
(WebInspector.DockController.prototype.setDockingUnavailable):
(WebInspector.DockController.prototype._updateUI.get states):
(WebInspector.DockController.prototype._updateUI):
(WebInspector.DockController.prototype._decorateButtonForTargetState):
(WebInspector.DockController.prototype._createDockOptions):
(WebInspector.DockController.prototype._toggleDockState):
(WebInspector.DockController.prototype.isCompactMode):
(WebInspector.DockController.prototype.setCompactMode):
* inspector/front-end/InspectorFrontendAPI.js:
(InspectorFrontendAPI.setAttachedWindow):
* inspector/front-end/InspectorFrontendHostStub.js:
(.WebInspector.InspectorFrontendHostStub.prototype.requestAttachWindow):
(.WebInspector.InspectorFrontendHostStub.prototype.requestDetachWindow):
* inspector/front-end/Settings.js:
* inspector/front-end/SettingsScreen.js:
(WebInspector.GenericSettingsTab):
* inspector/front-end/StatusBarButton.js:
(WebInspector.StatusBarButton):
* inspector/front-end/Toolbar.js:
(WebInspector.Toolbar):
(WebInspector.Toolbar.prototype.setCompactMode):
(WebInspector.Toolbar.prototype._toolbarDragStart):
(WebInspector.Toolbar.prototype._toolbarDrag):
* inspector/front-end/WebKit.qrc:
* inspector/front-end/externs.js:
(WebInspector.toggleSearchingForNode):
* inspector/front-end/inspector.css:
(body.undocked.platform-mac-snowleopard #toolbar):
(body.undocked.platform-mac-snowleopard #toolbar-dropdown):
* inspector/front-end/inspector.html:
* inspector/front-end/inspector.js:
(WebInspector._createGlobalStatusBarItems):
(windowLoaded):
(WebInspector.setDockingUnavailable):
* inspector/front-end/inspectorCommon.css:
(body.dock-to-right:not(.undocked)):
(body.dock-to-right.inactive:not(.undocked)):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@130288 268f45cc-cd09-0410-ab3c-d52691b4dbfc