Remove image_decode_tasks_enabled flag.

cc/trees/layer_tree_settings.h

Index: cc/trees/layer_tree_settings.h
diff --git a/cc/trees/layer_tree_settings.h b/cc/trees/layer_tree_settings.h
index a39c4e4954da9ff1b1c0f577b5f4114b9e0627be..00c51a93f53bc55fdae0b982cae9f5f2908ed575 100644
--- a/cc/trees/layer_tree_settings.h
+++ b/cc/trees/layer_tree_settings.h
@@ -80,11 +80,6 @@ class CC_EXPORT LayerTreeSettings {
   bool ignore_root_layer_flings = false;
   size_t scheduled_raster_task_limit = 32;
   bool use_occlusion_for_tile_prioritization = false;
-
-  // TODO(khushalsagar): Enable for all client and remove this flag if possible.
-  // See crbug/com/696864.
-  bool image_decode_tasks_enabled = false;
-
   bool use_layer_lists = false;
   int max_staging_buffer_usage_in_bytes = 32 * 1024 * 1024;
   ManagedMemoryPolicy gpu_memory_policy;