Revert of cc: Add image decode queue functionality to image manager.

cc/tiles/decoded_image_tracker_unittest.cc

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include <vector>
-
-#include "base/bind.h"
-#include "cc/tiles/decoded_image_tracker.h"
-#include "cc/tiles/image_controller.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace cc {
-
-class TestImageController : public ImageController {
- public:
-  TestImageController() : ImageController(nullptr, nullptr) {}
-
-  void UnlockImageDecode(ImageDecodeRequestId id) override {
-    auto it = std::find(locked_ids_.begin(), locked_ids_.end(), id);
-    ASSERT_FALSE(it == locked_ids_.end());
-    locked_ids_.erase(it);
-  }
-
-  ImageDecodeRequestId QueueImageDecode(
-      sk_sp<const SkImage> image,
-      const ImageDecodedCallback& callback) override {
-    auto id = next_id_++;
-    locked_ids_.push_back(id);
-    callback.Run(id);
-    return id;
-  }
-
-  size_t num_locked_images() { return locked_ids_.size(); }
-
- private:
-  ImageDecodeRequestId next_id_ = 1;
-  std::vector<ImageDecodeRequestId> locked_ids_;
-};
-
-class DecodedImageTrackerTest : public testing::Test {
- public:
-  void SetUp() override {
-    decoded_image_tracker_.set_image_controller(image_controller());
-  }
-
-  TestImageController* image_controller() { return &image_controller_; }
-  DecodedImageTracker* decoded_image_tracker() {
-    return &decoded_image_tracker_;
-  }
-
- private:
-  TestImageController image_controller_;
-  DecodedImageTracker decoded_image_tracker_;
-};
-
-TEST_F(DecodedImageTrackerTest, QueueImageLocksImages) {
-  bool locked = false;
-  decoded_image_tracker()->QueueImageDecode(
-      nullptr, base::Bind([](bool* locked) { *locked = true; },
-                          base::Unretained(&locked)));
-  EXPECT_TRUE(locked);
-  EXPECT_EQ(1u, image_controller()->num_locked_images());
-}
-
-TEST_F(DecodedImageTrackerTest, NotifyFrameFinishedUnlocksImages) {
-  bool locked = false;
-  decoded_image_tracker()->QueueImageDecode(
-      nullptr, base::Bind([](bool* locked) { *locked = true; },
-                          base::Unretained(&locked)));
-  EXPECT_TRUE(locked);
-  EXPECT_EQ(1u, image_controller()->num_locked_images());
-
-  decoded_image_tracker()->NotifyFrameFinished();
-  EXPECT_EQ(1u, image_controller()->num_locked_images());
-
-  locked = false;
-  decoded_image_tracker()->QueueImageDecode(
-      nullptr, base::Bind([](bool* locked) { *locked = true; },
-                          base::Unretained(&locked)));
-  EXPECT_TRUE(locked);
-  EXPECT_EQ(2u, image_controller()->num_locked_images());
-
-  decoded_image_tracker()->NotifyFrameFinished();
-  EXPECT_EQ(1u, image_controller()->num_locked_images());
-
-  decoded_image_tracker()->NotifyFrameFinished();
-  EXPECT_EQ(0u, image_controller()->num_locked_images());
-}
-
-}  // namespace cc