Update IDL to Chrome 32

modules/mediasource/VideoPlaybackQuality.idl

Index: modules/mediasource/VideoPlaybackQuality.idl
diff --git a/core/html/ime/Composition.idl b/modules/mediasource/VideoPlaybackQuality.idl
similarity index 84%
copy from core/html/ime/Composition.idl
copy to modules/mediasource/VideoPlaybackQuality.idl
index 494d2a06b75f42a4c55b6a01b0069e2701f412a3..7be130b56c2353e6ab274507e4611eef1363b296 100644
--- a/core/html/ime/Composition.idl
+++ b/modules/mediasource/VideoPlaybackQuality.idl
@@ -27,13 +27,10 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-
-// http://www.w3.org/TR/ime-api/
-[
-    NoInterfaceObject
-] interface Composition {
-    readonly attribute DOMString text;
-    readonly attribute long selectionStart;
-    readonly attribute long selectionEnd;
-    sequence<unsigned long> getSegments();
+[RuntimeEnabled=MediaSourceExperimental]
+interface VideoPlaybackQuality {
+    readonly attribute double creationTime;
+    readonly attribute unsigned long totalVideoFrames;
+    readonly attribute unsigned long droppedVideoFrames;
+    readonly attribute unsigned long corruptedVideoFrames;
 };