INPUT_SPEECH should be implemented as a PageSupplement.

INPUT_SPEECH should be implemented as a PageSupplement.
https://bugs.webkit.org/show_bug.cgi?id=79051

Source/WebCore:

Turned SpeechInput to a PageSupplement.

Reviewed by Adam Barth.

No new tests. No behavior change.

* html/shadow/TextControlInnerElements.cpp:
(WebCore::InputFieldSpeechButtonElement::speechInput):
(WebCore::InputFieldSpeechButtonElement::attach):
* page/Page.cpp:
(WebCore::Page::Page):
(WebCore::Page::PageClients::PageClients):
* page/Page.h:
(WebCore):
(PageClients):
(Page):
* page/SpeechInput.cpp:
(WebCore::SpeechInput::supplementName):
(WebCore):
(WebCore::provideSpeechInputTo):
* page/SpeechInput.h:
(SpeechInput):
(WebCore::SpeechInput::from):
* page/SpeechInputClient.h:
(WebCore):

Source/WebKit/chromium:

Reviewed by Adam Barth.

* src/WebViewImpl.cpp:
(WebKit::WebViewImpl::WebViewImpl):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108446 268f45cc-cd09-0410-ab3c-d52691b4dbfc