[chromium] Remove unused compositeToTexture / compositeOffscreen setting

[chromium] Remove unused compositeToTexture / compositeOffscreen setting
https://bugs.webkit.org/show_bug.cgi?id=83733

Reviewed by Adrienne Walker.

Source/Platform:

Remove compositeOffscreen setting. This was an experiment that is no longer needed.

* chromium/public/WebLayerTreeView.h:
(WebKit::WebLayerTreeView::Settings::Settings):
(Settings):

Source/WebCore:

Remove compositeOffscreen setting and implementation. This was an experiment that is no longer needed.

* platform/graphics/chromium/LayerRendererChromium.cpp:
(WebCore::LayerRendererChromium::finishDrawingFrame):
(WebCore::LayerRendererChromium::useRenderSurface):
(WebCore::LayerRendererChromium::setScissorToRect):
* platform/graphics/chromium/LayerRendererChromium.h:
(LayerRendererChromium):
* platform/graphics/chromium/cc/CCLayerTreeHost.h:
(WebCore::CCSettings::CCSettings):
(CCSettings):

Source/WebKit/chromium:

Remove compositeOffscreen / compositeToTexture setting. This was an experiment that is no longer needed.

* public/WebSettings.h:
* src/WebLayerTreeView.cpp:
(WebKit::WebLayerTreeView::Settings::operator CCSettings):
* src/WebSettingsImpl.cpp:
(WebKit::WebSettingsImpl::WebSettingsImpl):
* src/WebSettingsImpl.h:
(WebSettingsImpl):
* src/WebViewImpl.cpp:
(WebKit::WebViewImpl::setIsAcceleratedCompositingActive):

Tools:

Remove compositeOffscreen / compositeToTexture setting. This was an experiment that is no longer needed.

* DumpRenderTree/chromium/DumpRenderTree.cpp:
(main):
* DumpRenderTree/chromium/TestShell.cpp:
(TestShell::TestShell):
(TestShell::resetWebSettings):
* DumpRenderTree/chromium/TestShell.h:
(TestShell):
* DumpRenderTree/chromium/WebPreferences.cpp:
(WebPreferences::reset):
(WebPreferences::applyTo):
* DumpRenderTree/chromium/WebPreferences.h:
(WebPreferences):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114166 268f45cc-cd09-0410-ab3c-d52691b4dbfc