WKView being inside WKWebView leads to weird API issues

WKView being inside WKWebView leads to weird API issues
https://bugs.webkit.org/show_bug.cgi?id=150174

Reviewed by Darin Adler.

* UIProcess/API/mac/WKView.mm:
(-[WKView doCommandBySelector:]):
(-[WKView insertText:]):
(-[WKView insertText:replacementRange:]):
(-[WKView inputContext]):
(-[WKView performKeyEquivalent:]):
(-[WKView keyUp:]):
(-[WKView keyDown:]):
(-[WKView flagsChanged:]):
(-[WKView setMarkedText:selectedRange:replacementRange:]):
(-[WKView unmarkText]):
(-[WKView selectedRange]):
(-[WKView hasMarkedText]):
(-[WKView markedRange]):
(-[WKView attributedSubstringForProposedRange:actualRange:]):
(-[WKView characterIndexForPoint:]):
(-[WKView firstRectForCharacterRange:actualRange:]):
(-[WKView selectedRangeWithCompletionHandler:]):
(-[WKView markedRangeWithCompletionHandler:]):
(-[WKView hasMarkedTextWithCompletionHandler:]):
(-[WKView attributedSubstringForProposedRange:completionHandler:]):
(-[WKView firstRectForCharacterRange:completionHandler:]):
(-[WKView characterIndexForPoint:completionHandler:]):
(-[WKView _superPerformKeyEquivalent:]):
(-[WKView _superKeyDown:]):
(extractUnderlines): Deleted.
(-[WKView _collectKeyboardLayoutCommandsForEvent:to:]): Deleted.
(-[WKView _interpretKeyEvent:completionHandler:]): Deleted.
(-[WKView NO_RETURN_DUE_TO_ASSERT]): Deleted.
(-[WKView _interpretKeyEvent:savingCommandsTo:]): Deleted.
(-[WKView _executeSavedKeypressCommands]): Deleted.
(-[WKView _doneWithKeyEvent:eventWasHandled:]): Deleted.
* UIProcess/API/mac/WKViewInternal.h:
* UIProcess/Cocoa/WebViewImpl.h:
* UIProcess/Cocoa/WebViewImpl.mm:
(WebKit::WebViewImpl::doneWithKeyEvent):
(WebKit::extractUnderlines):
(WebKit::WebViewImpl::collectKeyboardLayoutCommandsForEvent):
(WebKit::WebViewImpl::interpretKeyEvent):
(WebKit::WebViewImpl::doCommandBySelector):
(WebKit::WebViewImpl::insertText):
(WebKit::WebViewImpl::selectedRangeWithCompletionHandler):
(WebKit::WebViewImpl::markedRangeWithCompletionHandler):
(WebKit::WebViewImpl::hasMarkedTextWithCompletionHandler):
(WebKit::WebViewImpl::attributedSubstringForProposedRange):
(WebKit::WebViewImpl::firstRectForCharacterRange):
(WebKit::WebViewImpl::characterIndexForPoint):
(WebKit::WebViewImpl::inputContext):
(WebKit::WebViewImpl::unmarkText):
(WebKit::WebViewImpl::setMarkedText):
(WebKit::WebViewImpl::selectedRange):
(WebKit::WebViewImpl::hasMarkedText):
(WebKit::WebViewImpl::markedRange):
(WebKit::WebViewImpl::performKeyEquivalent):
(WebKit::WebViewImpl::keyUp):
(WebKit::WebViewImpl::keyDown):
(WebKit::WebViewImpl::flagsChanged):
(WebKit::WebViewImpl::executeSavedKeypressCommands):
* UIProcess/mac/PageClientImpl.mm:
(WebKit::PageClientImpl::doneWithKeyEvent):
Move NSTextInputClient implementation.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@191791 268f45cc-cd09-0410-ab3c-d52691b4dbfc