Enable disabling WebCore::GraphicsContext in telemetry.

cc/layers/picture_image_layer.cc

Index: cc/layers/picture_image_layer.cc
diff --git a/cc/layers/picture_image_layer.cc b/cc/layers/picture_image_layer.cc
index c041936573bcbc1fd9df106a63675fe4a1411b8c..bd6b832e5ba7756d1845a6d028b7a2bccb36c3ab 100644
--- a/cc/layers/picture_image_layer.cc
+++ b/cc/layers/picture_image_layer.cc
@@ -42,7 +42,8 @@ void PictureImageLayer::SetBitmap(const SkBitmap& bitmap) {
 
 void PictureImageLayer::PaintContents(SkCanvas* canvas,
                                       const gfx::Rect& clip,
-                                      gfx::RectF* opaque) {
+                                      gfx::RectF* opaque,
+                                      bool disableContext) {
   if (!canvas || !bitmap_.width() || !bitmap_.height())

[Sami, 2014/04/29 10:57:23]

I think we can now also remove all the null checks against canvas since I only
added them for disabling painting.

[Stephen Chennney, 2014/04/29 20:30:45]

Done.

     return;