[chromium] LayerRenderChromium asserts about leaking textures.

[chromium] LayerRenderChromium asserts about leaking textures.
https://bugs.webkit.org/show_bug.cgi?id=68190

Reviewed by Kenneth Russell.

This introduces an interface TextureAllocator that the TextureManager uses to allocate/deallocate textures.
This means that TextureManager does not need to depend directly on GraphicsContext3D, other than for the format
enum type, making it more testable.  It also allows us to track the allocations by subclassing TextureAllocator
to make sure we aren't leaking any textures.

* WebCore.gypi:
* platform/graphics/chromium/Canvas2DLayerChromium.cpp:
(WebCore::Canvas2DLayerChromium::updateCompositorResources):
* platform/graphics/chromium/Canvas2DLayerChromium.h:
* platform/graphics/chromium/ImageLayerChromium.cpp:
(WebCore::ImageLayerTextureUpdater::updateTextureRect):
* platform/graphics/chromium/LayerChromium.h:
(WebCore::LayerChromium::updateCompositorResources):
* platform/graphics/chromium/LayerRendererChromium.cpp:
(WebCore::LayerRendererChromium::LayerRendererChromium):
(WebCore::LayerRendererChromium::releaseRenderSurfaceTextures):
(WebCore::LayerRendererChromium::drawLayers):
(WebCore::LayerRendererChromium::useRenderSurface):
(WebCore::LayerRendererChromium::initializeSharedObjects):
(WebCore::LayerRendererChromium::cleanupSharedObjects):
* platform/graphics/chromium/LayerRendererChromium.h:
(WebCore::LayerRendererChromium::renderSurfaceTextureAllocator):
(WebCore::LayerRendererChromium::contentsTextureAllocator):
* platform/graphics/chromium/LayerTextureUpdater.h:
* platform/graphics/chromium/LayerTextureUpdaterCanvas.cpp:
(WebCore::LayerTextureUpdaterBitmap::updateTextureRect):
(WebCore::LayerTextureUpdaterSkPicture::updateTextureRect):
* platform/graphics/chromium/LayerTextureUpdaterCanvas.h:
* platform/graphics/chromium/ManagedTexture.cpp:
(WebCore::ManagedTexture::bindTexture):
(WebCore::ManagedTexture::framebufferTexture2D):
* platform/graphics/chromium/ManagedTexture.h:
* platform/graphics/chromium/TextureManager.cpp:
(WebCore::TextureManager::memoryUseBytes):
(WebCore::TextureManager::deleteEvictedTextures):
(WebCore::TextureManager::evictAndDeleteAllTextures):
(WebCore::TextureManager::removeTexture):
(WebCore::TextureManager::allocateTexture):
(WebCore::TextureManager::requestTexture):
* platform/graphics/chromium/TextureManager.h:
(WebCore::TextureAllocator::~TextureAllocator):
* platform/graphics/chromium/TiledLayerChromium.cpp:
(WebCore::TiledLayerChromium::updateCompositorResources):
* platform/graphics/chromium/TiledLayerChromium.h:
* platform/graphics/chromium/TrackingTextureAllocator.cpp: Added.
(WebCore::TrackingTextureAllocator::TrackingTextureAllocator):
(WebCore::TrackingTextureAllocator::~TrackingTextureAllocator):
(WebCore::TrackingTextureAllocator::createTexture):
(WebCore::TrackingTextureAllocator::deleteTexture):
* platform/graphics/chromium/TrackingTextureAllocator.h: Copied from Source/WebCore/platform/graphics/chromium/ManagedTexture.h.
(WebCore::TrackingTextureAllocator::create):
(WebCore::TrackingTextureAllocator::currentMemoryUseBytes):
* platform/graphics/chromium/VideoLayerChromium.cpp:
(WebCore::VideoLayerChromium::updateCompositorResources):
(WebCore::VideoLayerChromium::updateTexture):
* platform/graphics/chromium/VideoLayerChromium.h:
* platform/graphics/chromium/WebGLLayerChromium.cpp:
(WebCore::WebGLLayerChromium::updateCompositorResources):
* platform/graphics/chromium/WebGLLayerChromium.h:
* platform/graphics/chromium/cc/CCHeadsUpDisplay.cpp:
(WebCore::CCHeadsUpDisplay::draw):
* platform/graphics/chromium/cc/CCLayerTreeHost.cpp:
(WebCore::CCLayerTreeHost::~CCLayerTreeHost):
(WebCore::CCLayerTreeHost::deleteContentsTexturesOnCCThread):
(WebCore::CCLayerTreeHost::commitToOnCCThread):
(WebCore::CCLayerTreeHost::didRecreateGraphicsContext):
(WebCore::CCLayerTreeHost::updateCompositorResources):
* platform/graphics/chromium/cc/CCLayerTreeHost.h:
* platform/graphics/chromium/cc/CCLayerTreeHostImpl.cpp:
(WebCore::CCLayerTreeHostImpl::contentsTextureAllocator):
(WebCore::CCLayerTreeHostImpl::initializeLayerRenderer):
* platform/graphics/chromium/cc/CCLayerTreeHostImpl.h:
* platform/graphics/chromium/cc/CCRenderSurface.cpp:
(WebCore::CCRenderSurface::drawSurface):
* platform/graphics/chromium/cc/CCSingleThreadProxy.cpp:
(WebCore::CCSingleThreadProxy::setNeedsCommit):
(WebCore::CCSingleThreadProxy::stop):
(WebCore::CCSingleThreadProxy::recreateContextIfNeeded):
(WebCore::CCSingleThreadProxy::commitIfNeeded):
* platform/graphics/chromium/cc/CCThreadProxy.cpp:
(WebCore::CCThreadProxy::commitOnCCThread):
(WebCore::CCThreadProxy::layerTreeHostClosedOnCCThread):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@96141 268f45cc-cd09-0410-ab3c-d52691b4dbfc