cc: Remove low quality mode and cleanup tile versions.

cc/debug/frame_viewer_instrumentation.h

Index: cc/debug/frame_viewer_instrumentation.h
diff --git a/cc/debug/frame_viewer_instrumentation.h b/cc/debug/frame_viewer_instrumentation.h
index 9a6d459cf4919a521a34fdbd4b98b93b81c1634d..e0e54eb3cb801dc33ee1744e5545ba405327068b 100644
--- a/cc/debug/frame_viewer_instrumentation.h
+++ b/cc/debug/frame_viewer_instrumentation.h
@@ -18,7 +18,6 @@ const char kLayerId[] = "layerId";
 const char kTileId[] = "tileId";
 const char kTileResolution[] = "tileResolution";
 const char kSourceFrameNumber[] = "sourceFrameNumber";
-const char kRasterMode[] = "rasterMode";
 
 const char kAnalyzeTask[] = "AnalyzeTask";
 const char kRasterTask[] = "RasterTask";
@@ -65,16 +64,13 @@ class ScopedRasterTask {
   ScopedRasterTask(const void* tile_id,
                    TileResolution tile_resolution,
                    int source_frame_number,
-                   int layer_id,
-                   RasterMode raster_mode) {
-    TRACE_EVENT_BEGIN2(
+                   int layer_id) {
+    TRACE_EVENT_BEGIN1(
         internal::kCategory,
         internal::kRasterTask,
         internal::kTileData,
         internal::TileDataAsValue(
-            tile_id, tile_resolution, source_frame_number, layer_id),
-        internal::kRasterMode,
-        RasterModeToString(raster_mode));
+            tile_id, tile_resolution, source_frame_number, layer_id));
   }
   ~ScopedRasterTask() {
     TRACE_EVENT_END0(internal::kCategory, internal::kRasterTask);