Gpu Image Decode Controller

cc/tiles/software_image_decode_controller.h

Index: cc/tiles/software_image_decode_controller.h
diff --git a/cc/tiles/software_image_decode_controller.h b/cc/tiles/software_image_decode_controller.h
index 4e959c7f2f8deae238e8e1e1bd9b4435c12e29ff..7ffa9f31508c930d0ca21d894037d722f1716d52 100644
--- a/cc/tiles/software_image_decode_controller.h
+++ b/cc/tiles/software_image_decode_controller.h
@@ -111,6 +111,9 @@ class CC_EXPORT SoftwareImageDecodeController : public ImageDecodeController {
   void DrawWithImageFinished(const DrawImage& image,
                              const DecodedDrawImage& decoded_image) override;
   void ReduceCacheUsage() override;
+  // Software doesn't keep outstanding images pinned, so this is a no-op.
+  void SetShouldAggressivelyFreeResources(
+      bool aggressively_free_resources) override {}
 
   // Decode the given image and store it in the cache. This is only called by an
   // image decode task from a worker thread.