Simplify CanvasAsyncBlobCreator by removing ContextObserver and related tests

third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreatorTest.cpp

Index: third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreatorTest.cpp
diff --git a/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreatorTest.cpp b/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreatorTest.cpp
deleted file mode 100644
index 9ffc255b975fb2ba2eb564ba7784150dfcfcf305..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreatorTest.cpp
+++ /dev/null
@@ -1,182 +0,0 @@
-// Copyright 2014 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 "core/html/canvas/CanvasAsyncBlobCreator.h"
-
-#include "core/html/ImageData.h"
-#include "platform/ThreadSafeFunctional.h"
-#include "platform/threading/BackgroundTaskRunner.h"
-#include "public/platform/Platform.h"
-#include "public/platform/WebWaitableEvent.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace blink {
-
-class MockCanvasAsyncBlobCreator;
-
-class FakeContextObserver {
-public:
-    FakeContextObserver(MockCanvasAsyncBlobCreator* asyncBlobCreator)
-        : m_asyncBlobCreator(asyncBlobCreator)
-    {
-    }
-
-    void contextDestroyed();
-
-private:
-    MockCanvasAsyncBlobCreator* m_asyncBlobCreator;
-};
-
-//============================================================================
-
-class MockCanvasAsyncBlobCreator : public CanvasAsyncBlobCreator {
-public:
-    MockCanvasAsyncBlobCreator(PassRefPtr<DOMUint8ClampedArray> data, const String& mimeType, const IntSize& size)
-        : CanvasAsyncBlobCreator(data, mimeType, size, nullptr)
-    {
-    }
-
-    void setFakeContextObserver(FakeContextObserver* contextObserver)
-    {
-        m_contextObserver = contextObserver;
-    }
-
-    bool isCancelled() { return m_cancelled; }
-    void onContextDestroyed()
-    {
-        m_cancelled = true;
-    }
-    MOCK_METHOD0(scheduleClearSelfRefOnMainThread, void());
-    MOCK_METHOD0(scheduleCreateNullptrAndCallOnMainThread, void());
-    MOCK_METHOD0(scheduleCreateBlobAndCallOnMainThread, void());
-
-private:
-    FakeContextObserver* m_contextObserver;
-};
-
-//============================================================================
-
-class CanvasAsyncBlobCreatorTest : public ::testing::Test {
-public:
-    void prepareMockCanvasAsyncBlobCreator(int width, int height);
-    bool initializeEncodeImage() { return m_asyncBlobCreator->initializeEncodeImageOnEncoderThread(); }
-    void startEncodeImage() { m_asyncBlobCreator->progressiveEncodeImageOnEncoderThread(); }
-
-protected:
-    CanvasAsyncBlobCreatorTest();
-    void TearDown() override;
-    MockCanvasAsyncBlobCreator* asyncBlobCreator();
-    FakeContextObserver* contextObserver();
-
-private:
-    RefPtr<MockCanvasAsyncBlobCreator> m_asyncBlobCreator;
-    FakeContextObserver* m_contextObserver;
-};
-
-//============================================================================
-
-CanvasAsyncBlobCreatorTest::CanvasAsyncBlobCreatorTest()
-{
-}
-
-void CanvasAsyncBlobCreatorTest::prepareMockCanvasAsyncBlobCreator(int width, int height)
-{
-    IntSize testSize(width, height);
-    ImageData* imageData = ImageData::create(testSize);
-    RefPtr<DOMUint8ClampedArray> imageDataRef(imageData->data());
-
-    m_asyncBlobCreator = adoptRef(new MockCanvasAsyncBlobCreator(imageDataRef.release(), "image/png", testSize));
-    m_contextObserver = new FakeContextObserver(m_asyncBlobCreator.get());
-    m_asyncBlobCreator->setFakeContextObserver(m_contextObserver);
-}
-
-void CanvasAsyncBlobCreatorTest::TearDown()
-{
-    delete m_contextObserver;
-    m_asyncBlobCreator->m_selfRef.clear();
-}
-
-void FakeContextObserver::contextDestroyed()
-{
-    m_asyncBlobCreator->onContextDestroyed();
-    m_asyncBlobCreator = nullptr;
-}
-
-void ImageEncodingTask(CanvasAsyncBlobCreatorTest* testHost, WebWaitableEvent* startEvent, WebWaitableEvent* doneEvent)
-{
-    bool initializationSuccess = testHost->initializeEncodeImage();
-    startEvent->signal();
-    if (initializationSuccess)
-        testHost->startEncodeImage();
-    doneEvent->signal();
-}
-
-void ImageEncodingTaskWithoutStartSignal(CanvasAsyncBlobCreatorTest* testHost, WebWaitableEvent* doneEvent)
-{
-    bool initializationSuccess = testHost->initializeEncodeImage();
-    if (initializationSuccess)
-        testHost->startEncodeImage();
-    doneEvent->signal();
-}
-
-MockCanvasAsyncBlobCreator* CanvasAsyncBlobCreatorTest::asyncBlobCreator()
-{
-    return m_asyncBlobCreator.get();
-}
-
-FakeContextObserver* CanvasAsyncBlobCreatorTest::contextObserver()
-{
-    return m_contextObserver;
-}
-
-TEST_F(CanvasAsyncBlobCreatorTest, CancelImageEncodingWhenContextTornDown)
-{
-    this->prepareMockCanvasAsyncBlobCreator(4000, 4000);
-
-    OwnPtr<WebWaitableEvent> startEvent = adoptPtr(Platform::current()->createWaitableEvent());
-    OwnPtr<WebWaitableEvent> doneEvent = adoptPtr(Platform::current()->createWaitableEvent());
-
-    EXPECT_CALL(*(asyncBlobCreator()), scheduleClearSelfRefOnMainThread());
-
-    BackgroundTaskRunner::postOnBackgroundThread(BLINK_FROM_HERE, threadSafeBind(&ImageEncodingTask, AllowCrossThreadAccess(this), AllowCrossThreadAccess(startEvent.get()), AllowCrossThreadAccess(doneEvent.get())), BackgroundTaskRunner::TaskSizeLongRunningTask);
-    startEvent->wait();
-    contextObserver()->contextDestroyed();
-    doneEvent->wait();
-
-    ::testing::Mock::VerifyAndClearExpectations(asyncBlobCreator());
-    EXPECT_TRUE(asyncBlobCreator()->isCancelled());
-}
-
-TEST_F(CanvasAsyncBlobCreatorTest, CompleteImageEncodingWithoutContextTornDown)
-{
-    this->prepareMockCanvasAsyncBlobCreator(50, 50);
-
-    OwnPtr<WebWaitableEvent> doneEvent = adoptPtr(Platform::current()->createWaitableEvent());
-
-    EXPECT_CALL(*(asyncBlobCreator()), scheduleCreateBlobAndCallOnMainThread());
-
-    BackgroundTaskRunner::postOnBackgroundThread(BLINK_FROM_HERE, threadSafeBind(&ImageEncodingTaskWithoutStartSignal, AllowCrossThreadAccess(this), AllowCrossThreadAccess(doneEvent.get())), BackgroundTaskRunner::TaskSizeShortRunningTask);
-    doneEvent->wait();
-
-    ::testing::Mock::VerifyAndClearExpectations(asyncBlobCreator());
-    EXPECT_FALSE(asyncBlobCreator()->isCancelled());
-}
-
-TEST_F(CanvasAsyncBlobCreatorTest, FailedImageEncodingOnEmptyImageData)
-{
-    this->prepareMockCanvasAsyncBlobCreator(0, 0);
-
-    OwnPtr<WebWaitableEvent> doneEvent = adoptPtr(Platform::current()->createWaitableEvent());
-
-    EXPECT_CALL(*(asyncBlobCreator()), scheduleCreateNullptrAndCallOnMainThread());
-
-    BackgroundTaskRunner::postOnBackgroundThread(BLINK_FROM_HERE, threadSafeBind(&ImageEncodingTaskWithoutStartSignal, AllowCrossThreadAccess(this), AllowCrossThreadAccess(doneEvent.get())), BackgroundTaskRunner::TaskSizeShortRunningTask);
-    doneEvent->wait();
-
-    ::testing::Mock::VerifyAndClearExpectations(asyncBlobCreator());
-    EXPECT_FALSE(asyncBlobCreator()->isCancelled());
-}
-
-} // namespace blink