Adding blink side flag that allows disabling YUV decoding

Source/web/WebSettingsImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "web/WebSettingsImpl.h"
 
 #include "core/frame/Settings.h"
 #include "core/inspector/InspectorController.h"
+#include "platform/graphics/DecodingImageGenerator.h"
 #include "platform/graphics/DeferredImageDecoder.h"
 
 #include "public/platform/WebString.h"
 #include "public/platform/WebURL.h"
 
 namespace blink {
 
 WebSettingsImpl::WebSettingsImpl(Settings* settings, InspectorController* inspectorController)
     : m_settings(settings)
     , m_inspectorController(inspectorController)
     , m_showFPSCounter(false)
     , m_showPaintRects(false)
     , m_renderVSyncNotificationEnabled(false)
     , m_autoZoomFocusedNodeToLegibleScale(false)
     , m_deferredImageDecodingEnabled(false)
     , m_doubleTapToZoomEnabled(false)
     , m_supportDeprecatedTargetDensityDPI(false)
     , m_shrinksViewportContentToFit(false)
     , m_viewportMetaLayoutSizeQuirk(false)
     , m_viewportMetaNonUserScalableQuirk(false)
     , m_clobberUserAgentInitialScaleQuirk(false)
     , m_mainFrameResizesAreOrientationChanges(false)
+    , m_decodeToYUVEnabled(false)
 {
     ASSERT(settings);
 }
 
 void WebSettingsImpl::setStandardFontFamily(const WebString& font, UScriptCode script)
 {
     if (m_settings->genericFontFamilySettings().updateStandard(font, script))
         m_settings->notifyGenericFontFamilyChange();
 }
 
@@ skipping 432 matching lines @@
 {
     m_settings->setContainerCullingEnabled(enabled);
 }
 
 void WebSettingsImpl::setDeferredImageDecodingEnabled(bool enabled)
 {
     DeferredImageDecoder::setEnabled(enabled);
     m_deferredImageDecodingEnabled = enabled;
 }
 
+void WebSettingsImpl::setDecodeToYUVEnabled(bool enabled)
+{
+    DecodingImageGenerator::setDecodeToYUVEnabled(enabled);
+    m_decodeToYUVEnabled = enabled;

[Stephen White, 2014/09/26 19:31:00]

Don't think there's any need for this.

+}
+
 void WebSettingsImpl::setDeferredFiltersEnabled(bool enabled)
 {
     m_settings->setDeferredFiltersEnabled(enabled);
 }
 
 void WebSettingsImpl::setPreferCompositingToLCDTextEnabled(bool enabled)
 {
     m_inspectorController->setPreferCompositingToLCDTextEnabled(enabled);
 }
 
@@ skipping 211 matching lines @@
 {
     m_settings->setV8CacheOptions(static_cast<blink::V8CacheOptions>(options));
 }
 
 void WebSettingsImpl::setV8ScriptStreamingEnabled(bool enabled)
 {
     m_settings->setV8ScriptStreamingEnabled(enabled);
 }
 
 } // namespace blink