cc: Rename PrioritizedTexture to PrioritizedResource.

cc/prioritized_texture_unittest.cc

-// Copyright 2012 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 "config.h"
-
-#include "cc/prioritized_texture.h"
-
-#include "cc/prioritized_texture_manager.h"
-#include "cc/single_thread_proxy.h" // For DebugScopedSetImplThread
-#include "cc/test/fake_graphics_context.h"
-#include "cc/test/tiled_layer_test_common.h"
-#include "cc/texture.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using namespace cc;
-using namespace WebKitTests;
-
-namespace cc {
-
-class PrioritizedTextureTest : public testing::Test {
-public:
-    PrioritizedTextureTest()
-        : m_textureSize(256, 256)
-        , m_textureFormat(GL_RGBA)
-        , m_context(WebKit::createFakeGraphicsContext())
-    {
-        DebugScopedSetImplThread implThread;
-        m_resourceProvider = ResourceProvider::create(m_context.get());
-    }
-
-    virtual ~PrioritizedTextureTest()
-    {
-        DebugScopedSetImplThread implThread;
-        m_resourceProvider.reset();
-    }
-
-    size_t texturesMemorySize(size_t textureCount)
-    {
-        return Texture::memorySizeBytes(m_textureSize, m_textureFormat) * textureCount;
-    }
-
-    scoped_ptr<PrioritizedTextureManager> createManager(size_t maxTextures)
-    {
-        return PrioritizedTextureManager::create(texturesMemorySize(maxTextures), 1024, 0);
-    }
-
-    bool validateTexture(scoped_ptr<PrioritizedTexture>& texture, bool requestLate)
-    {
-        textureManagerAssertInvariants(texture->textureManager());
-        if (requestLate)
-            texture->requestLate();
-        textureManagerAssertInvariants(texture->textureManager());
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        bool success = texture->canAcquireBackingTexture();
-        if (success)
-            texture->acquireBackingTexture(resourceProvider());
-        return success;
-    }
-
-    void prioritizeTexturesAndBackings(PrioritizedTextureManager* textureManager)
-    {
-        textureManager->prioritizeTextures();
-        textureManagerUpdateBackingsPriorities(textureManager);
-    }
-
-    void textureManagerUpdateBackingsPriorities(PrioritizedTextureManager* textureManager)
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->pushTexturePrioritiesToBackings();
-    }
-
-    ResourceProvider* resourceProvider()
-    {
-       return m_resourceProvider.get();
-    }
-
-    void textureManagerAssertInvariants(PrioritizedTextureManager* textureManager)
-    {
-#ifndef NDEBUG
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->assertInvariants();
-#endif
-    }
-
-    bool textureBackingIsAbovePriorityCutoff(PrioritizedTexture* texture)
-    {
-        return texture->m_backing->wasAbovePriorityCutoffAtLastPriorityUpdate();
-    }
-
-protected:
-    const gfx::Size m_textureSize;
-    const GLenum m_textureFormat;
-    scoped_ptr<GraphicsContext> m_context;
-    scoped_ptr<ResourceProvider> m_resourceProvider;
-};
-
-}
-
-namespace {
-
-TEST_F(PrioritizedTextureTest, requestTextureExceedingMaxLimit)
-{
-    const size_t maxTextures = 8;
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(maxTextures);
-
-    // Create textures for double our memory limit.
-    scoped_ptr<PrioritizedTexture> textures[maxTextures*2];
-
-    for (size_t i = 0; i < maxTextures*2; ++i)
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-
-    // Set decreasing priorities
-    for (size_t i = 0; i < maxTextures*2; ++i)
-        textures[i]->setRequestPriority(100 + i);
-
-    // Only lower half should be available.
-    prioritizeTexturesAndBackings(textureManager.get());
-    EXPECT_TRUE(validateTexture(textures[0], false));
-    EXPECT_TRUE(validateTexture(textures[7], false));
-    EXPECT_FALSE(validateTexture(textures[8], false));
-    EXPECT_FALSE(validateTexture(textures[15], false));
-
-    // Set increasing priorities
-    for (size_t i = 0; i < maxTextures*2; ++i)
-        textures[i]->setRequestPriority(100 - i);
-
-    // Only upper half should be available.
-    prioritizeTexturesAndBackings(textureManager.get());
-    EXPECT_FALSE(validateTexture(textures[0], false));
-    EXPECT_FALSE(validateTexture(textures[7], false));
-    EXPECT_TRUE(validateTexture(textures[8], false));
-    EXPECT_TRUE(validateTexture(textures[15], false));
-
-    EXPECT_EQ(texturesMemorySize(maxTextures), textureManager->memoryAboveCutoffBytes());
-    EXPECT_LE(textureManager->memoryUseBytes(), textureManager->memoryAboveCutoffBytes());
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManager->clearAllMemory(resourceProvider());
-}
-
-TEST_F(PrioritizedTextureTest, changeMemoryLimits)
-{
-    const size_t maxTextures = 8;
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(maxTextures);
-    scoped_ptr<PrioritizedTexture> textures[maxTextures];
-
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i]->setRequestPriority(100 + i);
-
-    // Set max limit to 8 textures
-    textureManager->setMaxMemoryLimitBytes(texturesMemorySize(8));
-    prioritizeTexturesAndBackings(textureManager.get());
-    for (size_t i = 0; i < maxTextures; ++i)
-        validateTexture(textures[i], false);
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->reduceMemory(resourceProvider());
-    }
-
-    EXPECT_EQ(texturesMemorySize(8), textureManager->memoryAboveCutoffBytes());
-    EXPECT_LE(textureManager->memoryUseBytes(), textureManager->memoryAboveCutoffBytes());
-
-    // Set max limit to 5 textures
-    textureManager->setMaxMemoryLimitBytes(texturesMemorySize(5));
-    prioritizeTexturesAndBackings(textureManager.get());
-    for (size_t i = 0; i < maxTextures; ++i)
-        EXPECT_EQ(validateTexture(textures[i], false), i < 5);
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->reduceMemory(resourceProvider());
-    }
-
-    EXPECT_EQ(texturesMemorySize(5), textureManager->memoryAboveCutoffBytes());
-    EXPECT_LE(textureManager->memoryUseBytes(), textureManager->memoryAboveCutoffBytes());
-
-    // Set max limit to 4 textures
-    textureManager->setMaxMemoryLimitBytes(texturesMemorySize(4));
-    prioritizeTexturesAndBackings(textureManager.get());
-    for (size_t i = 0; i < maxTextures; ++i)
-        EXPECT_EQ(validateTexture(textures[i], false), i < 4);
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->reduceMemory(resourceProvider());
-    }
-
-    EXPECT_EQ(texturesMemorySize(4), textureManager->memoryAboveCutoffBytes());
-    EXPECT_LE(textureManager->memoryUseBytes(), textureManager->memoryAboveCutoffBytes());
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManager->clearAllMemory(resourceProvider());
-}
-
-TEST_F(PrioritizedTextureTest, changePriorityCutoff)
-{
-    const size_t maxTextures = 8;
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(maxTextures);
-    scoped_ptr<PrioritizedTexture> textures[maxTextures];
-
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i]->setRequestPriority(100 + i);
-
-    // Set the cutoff to drop two textures. Try to requestLate on all textures, and
-    // make sure that requestLate doesn't work on a texture with equal priority to
-    // the cutoff.
-    textureManager->setMaxMemoryLimitBytes(texturesMemorySize(8));
-    textureManager->setExternalPriorityCutoff(106);
-    prioritizeTexturesAndBackings(textureManager.get());
-    for (size_t i = 0; i < maxTextures; ++i)
-        EXPECT_EQ(validateTexture(textures[i], true), i < 6);
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->reduceMemory(resourceProvider());
-    }
-    EXPECT_EQ(texturesMemorySize(6), textureManager->memoryAboveCutoffBytes());
-    EXPECT_LE(textureManager->memoryUseBytes(), textureManager->memoryAboveCutoffBytes());
-
-    // Set the cutoff to drop two more textures.
-    textureManager->setExternalPriorityCutoff(104);
-    prioritizeTexturesAndBackings(textureManager.get());
-    for (size_t i = 0; i < maxTextures; ++i)
-        EXPECT_EQ(validateTexture(textures[i], false), i < 4);
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->reduceMemory(resourceProvider());
-    }
-    EXPECT_EQ(texturesMemorySize(4), textureManager->memoryAboveCutoffBytes());
-
-    // Do a one-time eviction for one more texture based on priority cutoff
-    PrioritizedTextureManager::BackingList evictedBackings;
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->reduceMemoryOnImplThread(texturesMemorySize(8), 104, resourceProvider());
-        textureManager->getEvictedBackings(evictedBackings);
-        EXPECT_EQ(0, evictedBackings.size());
-        textureManager->reduceMemoryOnImplThread(texturesMemorySize(8), 103, resourceProvider());
-        textureManager->getEvictedBackings(evictedBackings);
-        EXPECT_EQ(1, evictedBackings.size());
-    }
-    textureManager->unlinkEvictedBackings(evictedBackings);
-    EXPECT_EQ(texturesMemorySize(3), textureManager->memoryUseBytes());
-
-    // Re-allocate the the texture after the one-time drop.
-    prioritizeTexturesAndBackings(textureManager.get());
-    for (size_t i = 0; i < maxTextures; ++i)
-        EXPECT_EQ(validateTexture(textures[i], false), i < 4);
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->reduceMemory(resourceProvider());
-    }
-    EXPECT_EQ(texturesMemorySize(4), textureManager->memoryAboveCutoffBytes());
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManager->clearAllMemory(resourceProvider());
-}
-
-TEST_F(PrioritizedTextureTest, textureManagerPartialUpdateTextures)
-{
-    const size_t maxTextures = 4;
-    const size_t numTextures = 4;
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(maxTextures);
-    scoped_ptr<PrioritizedTexture> textures[numTextures];
-    scoped_ptr<PrioritizedTexture> moreTextures[numTextures];
-
-    for (size_t i = 0; i < numTextures; ++i) {
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-        moreTextures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-    }
-
-    for (size_t i = 0; i < numTextures; ++i)
-        textures[i]->setRequestPriority(200 + i);
-    prioritizeTexturesAndBackings(textureManager.get());
-
-    // Allocate textures which are currently high priority.
-    EXPECT_TRUE(validateTexture(textures[0], false));
-    EXPECT_TRUE(validateTexture(textures[1], false));
-    EXPECT_TRUE(validateTexture(textures[2], false));
-    EXPECT_TRUE(validateTexture(textures[3], false));
-
-    EXPECT_TRUE(textures[0]->haveBackingTexture());
-    EXPECT_TRUE(textures[1]->haveBackingTexture());
-    EXPECT_TRUE(textures[2]->haveBackingTexture());
-    EXPECT_TRUE(textures[3]->haveBackingTexture());
-
-    for (size_t i = 0; i < numTextures; ++i)
-        moreTextures[i]->setRequestPriority(100 + i);
-    prioritizeTexturesAndBackings(textureManager.get());
-
-    // Textures are now below cutoff.
-    EXPECT_FALSE(validateTexture(textures[0], false));
-    EXPECT_FALSE(validateTexture(textures[1], false));
-    EXPECT_FALSE(validateTexture(textures[2], false));
-    EXPECT_FALSE(validateTexture(textures[3], false));
-
-    // But they are still valid to use.
-    EXPECT_TRUE(textures[0]->haveBackingTexture());
-    EXPECT_TRUE(textures[1]->haveBackingTexture());
-    EXPECT_TRUE(textures[2]->haveBackingTexture());
-    EXPECT_TRUE(textures[3]->haveBackingTexture());
-
-    // Higher priority textures are finally needed.
-    EXPECT_TRUE(validateTexture(moreTextures[0], false));
-    EXPECT_TRUE(validateTexture(moreTextures[1], false));
-    EXPECT_TRUE(validateTexture(moreTextures[2], false));
-    EXPECT_TRUE(validateTexture(moreTextures[3], false));
-
-    // Lower priority have been fully evicted.
-    EXPECT_FALSE(textures[0]->haveBackingTexture());
-    EXPECT_FALSE(textures[1]->haveBackingTexture());
-    EXPECT_FALSE(textures[2]->haveBackingTexture());
-    EXPECT_FALSE(textures[3]->haveBackingTexture());
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManager->clearAllMemory(resourceProvider());
-}
-
-TEST_F(PrioritizedTextureTest, textureManagerPrioritiesAreEqual)
-{
-    const size_t maxTextures = 16;
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(maxTextures);
-    scoped_ptr<PrioritizedTexture> textures[maxTextures];
-
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-
-    // All 16 textures have the same priority except 2 higher priority.
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i]->setRequestPriority(100);
-    textures[0]->setRequestPriority(99);
-    textures[1]->setRequestPriority(99);
-
-    // Set max limit to 8 textures
-    textureManager->setMaxMemoryLimitBytes(texturesMemorySize(8));
-    prioritizeTexturesAndBackings(textureManager.get());
-
-    // The two high priority textures should be available, others should not.
-    for (size_t i = 0; i < 2; ++i)
-        EXPECT_TRUE(validateTexture(textures[i], false));
-    for (size_t i = 2; i < maxTextures; ++i)
-        EXPECT_FALSE(validateTexture(textures[i], false));
-    EXPECT_EQ(texturesMemorySize(2), textureManager->memoryAboveCutoffBytes());
-    EXPECT_LE(textureManager->memoryUseBytes(), textureManager->memoryAboveCutoffBytes());
-
-    // Manually reserving textures should only succeed on the higher priority textures,
-    // and on remaining textures up to the memory limit.
-    for (size_t i = 0; i < 8; i++)
-        EXPECT_TRUE(validateTexture(textures[i], true));
-    for (size_t i = 9; i < maxTextures; i++)
-        EXPECT_FALSE(validateTexture(textures[i], true));
-    EXPECT_EQ(texturesMemorySize(8), textureManager->memoryAboveCutoffBytes());
-    EXPECT_LE(textureManager->memoryUseBytes(), textureManager->memoryAboveCutoffBytes());
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManager->clearAllMemory(resourceProvider());
-}
-
-TEST_F(PrioritizedTextureTest, textureManagerDestroyedFirst)
-{
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(1);
-    scoped_ptr<PrioritizedTexture> texture = textureManager->createTexture(m_textureSize, m_textureFormat);
-
-    // Texture is initially invalid, but it will become available.
-    EXPECT_FALSE(texture->haveBackingTexture());
-
-    texture->setRequestPriority(100);
-    prioritizeTexturesAndBackings(textureManager.get());
-
-    EXPECT_TRUE(validateTexture(texture, false));
-    EXPECT_TRUE(texture->canAcquireBackingTexture());
-    EXPECT_TRUE(texture->haveBackingTexture());
-
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->clearAllMemory(resourceProvider());
-    }
-    textureManager.reset();
-
-    EXPECT_FALSE(texture->canAcquireBackingTexture());
-    EXPECT_FALSE(texture->haveBackingTexture());
-}
-
-TEST_F(PrioritizedTextureTest, textureMovedToNewManager)
-{
-    scoped_ptr<PrioritizedTextureManager> textureManagerOne = createManager(1);
-    scoped_ptr<PrioritizedTextureManager> textureManagerTwo = createManager(1);
-    scoped_ptr<PrioritizedTexture> texture = textureManagerOne->createTexture(m_textureSize, m_textureFormat);
-
-    // Texture is initially invalid, but it will become available.
-    EXPECT_FALSE(texture->haveBackingTexture());
-
-    texture->setRequestPriority(100);
-    prioritizeTexturesAndBackings(textureManagerOne.get());
-
-    EXPECT_TRUE(validateTexture(texture, false));
-    EXPECT_TRUE(texture->canAcquireBackingTexture());
-    EXPECT_TRUE(texture->haveBackingTexture());
-
-    texture->setTextureManager(0);
-
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManagerOne->clearAllMemory(resourceProvider());
-    }
-    textureManagerOne.reset();
-
-    EXPECT_FALSE(texture->canAcquireBackingTexture());
-    EXPECT_FALSE(texture->haveBackingTexture());
-
-    texture->setTextureManager(textureManagerTwo.get());
-
-    prioritizeTexturesAndBackings(textureManagerTwo.get());
-
-    EXPECT_TRUE(validateTexture(texture, false));
-    EXPECT_TRUE(texture->canAcquireBackingTexture());
-    EXPECT_TRUE(texture->haveBackingTexture());
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManagerTwo->clearAllMemory(resourceProvider());
-}
-
-TEST_F(PrioritizedTextureTest, renderSurfacesReduceMemoryAvailableOutsideRootSurface)
-{
-    const size_t maxTextures = 8;
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(maxTextures);
-
-    // Half of the memory is taken by surfaces (with high priority place-holder)
-    scoped_ptr<PrioritizedTexture> renderSurfacePlaceHolder = textureManager->createTexture(m_textureSize, m_textureFormat);
-    renderSurfacePlaceHolder->setToSelfManagedMemoryPlaceholder(texturesMemorySize(4));
-    renderSurfacePlaceHolder->setRequestPriority(PriorityCalculator::renderSurfacePriority());
-
-    // Create textures to fill our memory limit.
-    scoped_ptr<PrioritizedTexture> textures[maxTextures];
-
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-
-    // Set decreasing non-visible priorities outside root surface.
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i]->setRequestPriority(100 + i);
-
-    // Only lower half should be available.
-    prioritizeTexturesAndBackings(textureManager.get());
-    EXPECT_TRUE(validateTexture(textures[0], false));
-    EXPECT_TRUE(validateTexture(textures[3], false));
-    EXPECT_FALSE(validateTexture(textures[4], false));
-    EXPECT_FALSE(validateTexture(textures[7], false));
-
-    // Set increasing non-visible priorities outside root surface.
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i]->setRequestPriority(100 - i);
-
-    // Only upper half should be available.
-    prioritizeTexturesAndBackings(textureManager.get());
-    EXPECT_FALSE(validateTexture(textures[0], false));
-    EXPECT_FALSE(validateTexture(textures[3], false));
-    EXPECT_TRUE(validateTexture(textures[4], false));
-    EXPECT_TRUE(validateTexture(textures[7], false));
-
-    EXPECT_EQ(texturesMemorySize(4), textureManager->memoryAboveCutoffBytes());
-    EXPECT_EQ(texturesMemorySize(4), textureManager->memoryForSelfManagedTextures());
-    EXPECT_LE(textureManager->memoryUseBytes(), textureManager->memoryAboveCutoffBytes());
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManager->clearAllMemory(resourceProvider());
-}
-
-TEST_F(PrioritizedTextureTest, renderSurfacesReduceMemoryAvailableForRequestLate)
-{
-    const size_t maxTextures = 8;
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(maxTextures);
-
-    // Half of the memory is taken by surfaces (with high priority place-holder)
-    scoped_ptr<PrioritizedTexture> renderSurfacePlaceHolder = textureManager->createTexture(m_textureSize, m_textureFormat);
-    renderSurfacePlaceHolder->setToSelfManagedMemoryPlaceholder(texturesMemorySize(4));
-    renderSurfacePlaceHolder->setRequestPriority(PriorityCalculator::renderSurfacePriority());
-
-    // Create textures to fill our memory limit.
-    scoped_ptr<PrioritizedTexture> textures[maxTextures];
-
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-
-    // Set equal priorities.
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i]->setRequestPriority(100);
-
-    // The first four to be requested late will be available.
-    prioritizeTexturesAndBackings(textureManager.get());
-    for (unsigned i = 0; i < maxTextures; ++i)
-        EXPECT_FALSE(validateTexture(textures[i], false));
-    for (unsigned i = 0; i < maxTextures; i += 2)
-        EXPECT_TRUE(validateTexture(textures[i], true));
-    for (unsigned i = 1; i < maxTextures; i += 2)
-        EXPECT_FALSE(validateTexture(textures[i], true));
-
-    EXPECT_EQ(texturesMemorySize(4), textureManager->memoryAboveCutoffBytes());
-    EXPECT_EQ(texturesMemorySize(4), textureManager->memoryForSelfManagedTextures());
-    EXPECT_LE(textureManager->memoryUseBytes(), textureManager->memoryAboveCutoffBytes());
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManager->clearAllMemory(resourceProvider());
-}
-
-TEST_F(PrioritizedTextureTest, whenRenderSurfaceNotAvailableTexturesAlsoNotAvailable)
-{
-    const size_t maxTextures = 8;
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(maxTextures);
-
-    // Half of the memory is taken by surfaces (with high priority place-holder)
-    scoped_ptr<PrioritizedTexture> renderSurfacePlaceHolder = textureManager->createTexture(m_textureSize, m_textureFormat);
-    renderSurfacePlaceHolder->setToSelfManagedMemoryPlaceholder(texturesMemorySize(4));
-    renderSurfacePlaceHolder->setRequestPriority(PriorityCalculator::renderSurfacePriority());
-
-    // Create textures to fill our memory limit.
-    scoped_ptr<PrioritizedTexture> textures[maxTextures];
-
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-
-    // Set 6 visible textures in the root surface, and 2 in a child surface.
-    for (size_t i = 0; i < 6; ++i)
-        textures[i]->setRequestPriority(PriorityCalculator::visiblePriority(true));
-    for (size_t i = 6; i < 8; ++i)
-        textures[i]->setRequestPriority(PriorityCalculator::visiblePriority(false));
-
-    prioritizeTexturesAndBackings(textureManager.get());
-
-    // Unable to requestLate textures in the child surface.
-    EXPECT_FALSE(validateTexture(textures[6], true));
-    EXPECT_FALSE(validateTexture(textures[7], true));
-
-    // Root surface textures are valid.
-    for (size_t i = 0; i < 6; ++i)
-        EXPECT_TRUE(validateTexture(textures[i], false));
-
-    EXPECT_EQ(texturesMemorySize(6), textureManager->memoryAboveCutoffBytes());
-    EXPECT_EQ(texturesMemorySize(2), textureManager->memoryForSelfManagedTextures());
-    EXPECT_LE(textureManager->memoryUseBytes(), textureManager->memoryAboveCutoffBytes());
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManager->clearAllMemory(resourceProvider());
-}
-
-TEST_F(PrioritizedTextureTest, requestLateBackingsSorting)
-{
-    const size_t maxTextures = 8;
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(maxTextures);
-    textureManager->setMaxMemoryLimitBytes(texturesMemorySize(maxTextures));
-
-    // Create textures to fill our memory limit.
-    scoped_ptr<PrioritizedTexture> textures[maxTextures];
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-
-    // Set equal priorities, and allocate backings for all textures.
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i]->setRequestPriority(100);
-    prioritizeTexturesAndBackings(textureManager.get());
-    for (unsigned i = 0; i < maxTextures; ++i)
-        EXPECT_TRUE(validateTexture(textures[i], false));
-
-    // Drop the memory limit and prioritize (none will be above the threshold,
-    // but they still have backings because reduceMemory hasn't been called).
-    textureManager->setMaxMemoryLimitBytes(texturesMemorySize(maxTextures / 2));
-    prioritizeTexturesAndBackings(textureManager.get());
-
-    // Push half of them back over the limit.
-    for (size_t i = 0; i < maxTextures; i += 2)
-        EXPECT_TRUE(textures[i]->requestLate());
-
-    // Push the priorities to the backings array and sort the backings array
-    textureManagerUpdateBackingsPriorities(textureManager.get());
-
-    // Assert that the backings list be sorted with the below-limit backings
-    // before the above-limit backings.
-    textureManagerAssertInvariants(textureManager.get());
-
-    // Make sure that we have backings for all of the textures.
-    for (size_t i = 0; i < maxTextures; ++i)
-        EXPECT_TRUE(textures[i]->haveBackingTexture());
-
-    // Make sure that only the requestLate textures are above the priority cutoff
-    for (size_t i = 0; i < maxTextures; i += 2)
-        EXPECT_TRUE(textureBackingIsAbovePriorityCutoff(textures[i].get()));
-    for (size_t i = 1; i < maxTextures; i += 2)
-        EXPECT_FALSE(textureBackingIsAbovePriorityCutoff(textures[i].get()));
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManager->clearAllMemory(resourceProvider());
-}
-
-TEST_F(PrioritizedTextureTest, clearUploadsToEvictedResources)
-{
-    const size_t maxTextures = 4;
-    scoped_ptr<PrioritizedTextureManager> textureManager =
-        createManager(maxTextures);
-    textureManager->setMaxMemoryLimitBytes(texturesMemorySize(maxTextures));
-
-    // Create textures to fill our memory limit.
-    scoped_ptr<PrioritizedTexture> textures[maxTextures];
-
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-
-    // Set equal priorities, and allocate backings for all textures.
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i]->setRequestPriority(100);
-    prioritizeTexturesAndBackings(textureManager.get());
-    for (unsigned i = 0; i < maxTextures; ++i)
-        EXPECT_TRUE(validateTexture(textures[i], false));
-
-    ResourceUpdateQueue queue;
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    for (size_t i = 0; i < maxTextures; ++i) {
-        const ResourceUpdate upload = ResourceUpdate::Create(
-            textures[i].get(), NULL, gfx::Rect(), gfx::Rect(), gfx::Vector2d());
-        queue.appendFullUpload(upload);
-    }
-
-    // Make sure that we have backings for all of the textures.
-    for (size_t i = 0; i < maxTextures; ++i)
-        EXPECT_TRUE(textures[i]->haveBackingTexture());
-
-    queue.clearUploadsToEvictedResources();
-    EXPECT_EQ(4, queue.fullUploadSize());
-
-    textureManager->reduceMemoryOnImplThread(
-        texturesMemorySize(1), PriorityCalculator::allowEverythingCutoff(), resourceProvider());
-    queue.clearUploadsToEvictedResources();
-    EXPECT_EQ(1, queue.fullUploadSize());
-
-    textureManager->reduceMemoryOnImplThread(0,  PriorityCalculator::allowEverythingCutoff(), resourceProvider());
-    queue.clearUploadsToEvictedResources();
-    EXPECT_EQ(0, queue.fullUploadSize());
-
-}
-
-TEST_F(PrioritizedTextureTest, usageStatistics)
-{
-    const size_t maxTextures = 5;
-    scoped_ptr<PrioritizedTextureManager> textureManager = createManager(maxTextures);
-    scoped_ptr<PrioritizedTexture> textures[maxTextures];
-
-    for (size_t i = 0; i < maxTextures; ++i)
-        textures[i] = textureManager->createTexture(m_textureSize, m_textureFormat);
-
-    textures[0]->setRequestPriority(PriorityCalculator::allowVisibleOnlyCutoff() - 1);
-    textures[1]->setRequestPriority(PriorityCalculator::allowVisibleOnlyCutoff());
-    textures[2]->setRequestPriority(PriorityCalculator::allowVisibleAndNearbyCutoff() - 1);
-    textures[3]->setRequestPriority(PriorityCalculator::allowVisibleAndNearbyCutoff());
-    textures[4]->setRequestPriority(PriorityCalculator::allowVisibleAndNearbyCutoff() + 1);
-
-    // Set max limit to 2 textures.
-    textureManager->setMaxMemoryLimitBytes(texturesMemorySize(2));
-    prioritizeTexturesAndBackings(textureManager.get());
-
-    // The first two textures should be available, others should not.
-    for (size_t i = 0; i < 2; ++i)
-        EXPECT_TRUE(validateTexture(textures[i], false));
-    for (size_t i = 2; i < maxTextures; ++i)
-        EXPECT_FALSE(validateTexture(textures[i], false));
-
-    // Validate the statistics.
-    {
-        DebugScopedSetImplThread implThread;
-        EXPECT_EQ(texturesMemorySize(2), textureManager->memoryUseBytes());
-        EXPECT_EQ(texturesMemorySize(1), textureManager->memoryVisibleBytes());
-        EXPECT_EQ(texturesMemorySize(3), textureManager->memoryVisibleAndNearbyBytes());
-    }
-
-    // Re-prioritize the textures, but do not push the values to backings.
-    textures[0]->setRequestPriority(PriorityCalculator::allowVisibleOnlyCutoff() - 1);
-    textures[1]->setRequestPriority(PriorityCalculator::allowVisibleOnlyCutoff() - 1);
-    textures[2]->setRequestPriority(PriorityCalculator::allowVisibleOnlyCutoff() - 1);
-    textures[3]->setRequestPriority(PriorityCalculator::allowVisibleAndNearbyCutoff() - 1);
-    textures[4]->setRequestPriority(PriorityCalculator::allowVisibleAndNearbyCutoff());
-    textureManager->prioritizeTextures();
-
-    // Verify that we still see the old values.
-    {
-        DebugScopedSetImplThread implThread;
-        EXPECT_EQ(texturesMemorySize(2), textureManager->memoryUseBytes());
-        EXPECT_EQ(texturesMemorySize(1), textureManager->memoryVisibleBytes());
-        EXPECT_EQ(texturesMemorySize(3), textureManager->memoryVisibleAndNearbyBytes());
-    }
-
-    // Push priorities to backings, and verify we see the new values.
-    {
-        DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-        textureManager->pushTexturePrioritiesToBackings();
-        EXPECT_EQ(texturesMemorySize(2), textureManager->memoryUseBytes());
-        EXPECT_EQ(texturesMemorySize(3), textureManager->memoryVisibleBytes());
-        EXPECT_EQ(texturesMemorySize(4), textureManager->memoryVisibleAndNearbyBytes());
-    }
-
-    DebugScopedSetImplThreadAndMainThreadBlocked implThreadAndMainThreadBlocked;
-    textureManager->clearAllMemory(resourceProvider());
-}
-
-
-}  // anonymous namespace