Remove some unneeded DEPS from //sky

sky/engine/platform/graphics/gpu/DrawingBuffer.h

Index: sky/engine/platform/graphics/gpu/DrawingBuffer.h
diff --git a/sky/engine/platform/graphics/gpu/DrawingBuffer.h b/sky/engine/platform/graphics/gpu/DrawingBuffer.h
deleted file mode 100644
index 093a6c275b44f47d30524d62bec28718126d069a..0000000000000000000000000000000000000000
--- a/sky/engine/platform/graphics/gpu/DrawingBuffer.h
+++ /dev/null
@@ -1,305 +0,0 @@
-/*
- * Copyright (c) 2010, Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef SKY_ENGINE_PLATFORM_GRAPHICS_GPU_DRAWINGBUFFER_H_
-#define SKY_ENGINE_PLATFORM_GRAPHICS_GPU_DRAWINGBUFFER_H_
-
-#include "sky/engine/platform/PlatformExport.h"
-#include "sky/engine/platform/geometry/IntSize.h"
-#include "sky/engine/platform/graphics/GraphicsTypes3D.h"
-#include "sky/engine/platform/graphics/gpu/WebGLImageConversion.h"
-#include "sky/engine/public/platform/WebExternalTextureLayerClient.h"
-#include "sky/engine/public/platform/WebExternalTextureMailbox.h"
-#include "sky/engine/public/platform/WebGraphicsContext3D.h"
-#include "sky/engine/wtf/Deque.h"
-#include "sky/engine/wtf/Noncopyable.h"
-#include "sky/engine/wtf/OwnPtr.h"
-#include "sky/engine/wtf/PassOwnPtr.h"
-#include "third_party/khronos/GLES2/gl2.h"
-#include "third_party/khronos/GLES2/gl2ext.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-
-namespace blink {
-
-class Extensions3DUtil;
-class ImageBuffer;
-class WebExternalBitmap;
-class WebExternalTextureLayer;
-class WebGraphicsContext3D;
-class WebLayer;
-
-// Abstract interface to allow basic context eviction management
-class PLATFORM_EXPORT ContextEvictionManager : public RefCounted<ContextEvictionManager> {
-public:
-    virtual ~ContextEvictionManager() {};
-
-    virtual void forciblyLoseOldestContext(const String& reason) = 0;
-    virtual IntSize oldestContextSize() = 0;
-};
-
-// Manages a rendering target (framebuffer + attachment) for a canvas.  Can publish its rendering
-// results to a WebLayer for compositing.
-class PLATFORM_EXPORT DrawingBuffer : public RefCounted<DrawingBuffer>, public WebExternalTextureLayerClient  {
-    // If we used CHROMIUM_image as the backing storage for our buffers,
-    // we need to know the mapping from texture id to image.
-    struct TextureInfo {
-        Platform3DObject textureId;
-        WGC3Duint imageId;
-
-        TextureInfo()
-            : textureId(0)
-            , imageId(0)
-        {
-        }
-    };
-
-    struct MailboxInfo : public RefCounted<MailboxInfo> {
-        WebExternalTextureMailbox mailbox;
-        TextureInfo textureInfo;
-        IntSize size;
-        // This keeps the parent drawing buffer alive as long as the compositor is
-        // referring to one of the mailboxes DrawingBuffer produced. The parent drawing buffer is
-        // cleared when the compositor returns the mailbox. See mailboxReleased().
-        RefPtr<DrawingBuffer> m_parentDrawingBuffer;
-    };
-public:
-    enum PreserveDrawingBuffer {
-        Preserve,
-        Discard
-    };
-
-    static PassRefPtr<DrawingBuffer> create(PassOwnPtr<WebGraphicsContext3D>, const IntSize&, PreserveDrawingBuffer, WebGraphicsContext3D::Attributes requestedAttributes, PassRefPtr<ContextEvictionManager>);
-
-    virtual ~DrawingBuffer();
-
-    // Destruction will be completed after all mailboxes are released.
-    void beginDestruction();
-
-    // Issues a glClear() on all framebuffers associated with this DrawingBuffer. The caller is responsible for
-    // making the context current and setting the clear values and masks. Modifies the framebuffer binding.
-    void clearFramebuffers(GLbitfield clearMask);
-
-    // Given the desired buffer size, provides the largest dimensions that will fit in the pixel budget.
-    static IntSize adjustSize(const IntSize& desiredSize, const IntSize& curSize, int maxTextureSize);
-    bool reset(const IntSize&);
-    void bind();
-    IntSize size() const { return m_size; }
-
-    // Copies the multisample color buffer to the normal color buffer and leaves m_fbo bound.
-    void commit(long x = 0, long y = 0, long width = -1, long height = -1);
-
-    // commit should copy the full multisample buffer, and not respect the
-    // current scissor bounds. Track the state of the scissor test so that it
-    // can be disabled during calls to commit.
-    void setScissorEnabled(bool scissorEnabled) { m_scissorEnabled = scissorEnabled; }
-
-    // The DrawingBuffer needs to track the texture bound to texture unit 0.
-    // The bound texture is tracked to avoid costly queries during rendering.
-    void setTexture2DBinding(Platform3DObject texture) { m_texture2DBinding = texture; }
-
-    // The DrawingBuffer needs to track the currently bound framebuffer so it
-    // restore the binding when needed.
-    void setFramebufferBinding(Platform3DObject fbo) { m_framebufferBinding = fbo; }
-
-    // Track the currently active texture unit. Texture unit 0 is used as host for a scratch
-    // texture.
-    void setActiveTextureUnit(GLint textureUnit) { m_activeTextureUnit = textureUnit; }
-
-    bool multisample() const;
-
-    Platform3DObject framebuffer() const;
-
-    void markContentsChanged();
-    void markLayerComposited();
-    bool layerComposited() const;
-    void setIsHidden(bool);
-
-    WebLayer* platformLayer();
-    void paintCompositedResultsToCanvas(ImageBuffer*);
-
-    WebGraphicsContext3D* context();
-
-    // Returns the actual context attributes for this drawing buffer which may differ from the
-    // requested context attributes due to implementation limits.
-    WebGraphicsContext3D::Attributes getActualAttributes() const { return m_actualAttributes; }
-
-    // WebExternalTextureLayerClient implementation.
-    virtual bool prepareMailbox(WebExternalTextureMailbox*, WebExternalBitmap*) override;
-    virtual void mailboxReleased(const WebExternalTextureMailbox&, bool lostResource = false) override;
-
-    // Destroys the TEXTURE_2D binding for the owned context
-    bool copyToPlatformTexture(WebGraphicsContext3D*, Platform3DObject texture, GLenum internalFormat,
-        GLenum destType, GLint level, bool premultiplyAlpha, bool flipY, bool fromFrontBuffer = false);
-
-    void setPackAlignment(GLint param);
-
-    void paintRenderingResultsToCanvas(ImageBuffer*);
-    PassRefPtr<Uint8ClampedArray> paintRenderingResultsToImageData(int&, int&);
-
-protected: // For unittests
-    DrawingBuffer(
-        PassOwnPtr<WebGraphicsContext3D>,
-        PassOwnPtr<Extensions3DUtil>,
-        bool multisampleExtensionSupported,
-        bool packedDepthStencilExtensionSupported,
-        PreserveDrawingBuffer,
-        WebGraphicsContext3D::Attributes requestedAttributes,
-        PassRefPtr<ContextEvictionManager>);
-
-    bool initialize(const IntSize&);
-
-private:
-    void mailboxReleasedWithoutRecycling(const WebExternalTextureMailbox&);
-
-    unsigned createColorTexture();
-    // Create the depth/stencil and multisample buffers, if needed.
-    void createSecondaryBuffers();
-    bool resizeFramebuffer(const IntSize&);
-    bool resizeMultisampleFramebuffer(const IntSize&);
-    void resizeDepthStencil(const IntSize&);
-
-    // Bind to the m_framebufferBinding if it's not 0.
-    void restoreFramebufferBinding();
-
-    void clearPlatformLayer();
-
-    PassRefPtr<MailboxInfo> recycledMailbox();
-    PassRefPtr<MailboxInfo> createNewMailbox(const TextureInfo&);
-    void deleteMailbox(const WebExternalTextureMailbox&);
-    void freeRecycledMailboxes();
-
-    // Updates the current size of the buffer, ensuring that s_currentResourceUsePixels is updated.
-    void setSize(const IntSize& size);
-
-    // Calculates the difference in pixels between the current buffer size and the proposed size.
-    static int pixelDelta(const IntSize& newSize, const IntSize& curSize);
-
-    // Given the desired buffer size, provides the largest dimensions that will fit in the pixel budget
-    // Returns true if the buffer will only fit if the oldest WebGL context is forcibly lost
-    IntSize adjustSizeWithContextEviction(const IntSize&, bool& evictContext);
-
-    void paintFramebufferToCanvas(int framebuffer, int width, int height, bool premultiplyAlpha, ImageBuffer*);
-
-    // This is the order of bytes to use when doing a readback.
-    enum ReadbackOrder {
-        ReadbackRGBA,
-        ReadbackSkia
-    };
-
-    // Helper function which does a readback from the currently-bound
-    // framebuffer into a buffer of a certain size with 4-byte pixels.
-    void readBackFramebuffer(unsigned char* pixels, int width, int height, ReadbackOrder, WebGLImageConversion::AlphaOp);
-
-    // Helper function to flip a bitmap vertically.
-    void flipVertically(uint8_t* data, int width, int height);
-
-    // Helper to texImage2D with pixel==0 case: pixels are initialized to 0.
-    // By default, alignment is 4, the OpenGL default setting.
-    void texImage2DResourceSafe(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, GLint alignment = 4);
-    // Allocate buffer storage to be sent to compositor using either texImage2D or CHROMIUM_image based on available support.
-    void allocateTextureMemory(TextureInfo*, const IntSize&);
-    void deleteChromiumImageForTexture(TextureInfo*);
-
-    PreserveDrawingBuffer m_preserveDrawingBuffer;
-    bool m_scissorEnabled;
-    Platform3DObject m_texture2DBinding;
-    Platform3DObject m_framebufferBinding;
-    GLenum m_activeTextureUnit;
-
-    OwnPtr<WebGraphicsContext3D> m_context;
-    OwnPtr<Extensions3DUtil> m_extensionsUtil;
-    IntSize m_size;
-    WebGraphicsContext3D::Attributes m_requestedAttributes;
-    bool m_multisampleExtensionSupported;
-    bool m_packedDepthStencilExtensionSupported;
-    Platform3DObject m_fbo;
-    // DrawingBuffer's output is double-buffered. m_colorBuffer is the back buffer.
-    TextureInfo m_colorBuffer;
-    TextureInfo m_frontColorBuffer;
-
-    // This is used when we have OES_packed_depth_stencil.
-    Platform3DObject m_depthStencilBuffer;
-
-    // These are used when we don't.
-    Platform3DObject m_depthBuffer;
-    Platform3DObject m_stencilBuffer;
-
-    // For multisampling.
-    Platform3DObject m_multisampleFBO;
-    Platform3DObject m_multisampleColorBuffer;
-
-    // True if our contents have been modified since the last presentation of this buffer.
-    bool m_contentsChanged;
-
-    // True if commit() has been called since the last time markContentsChanged() had been called.
-    bool m_contentsChangeCommitted;
-    bool m_layerComposited;
-
-    enum MultisampleMode {
-        None,
-        ImplicitResolve,
-        ExplicitResolve,
-    };
-
-    MultisampleMode m_multisampleMode;
-
-    WebGraphicsContext3D::Attributes m_actualAttributes;
-    unsigned m_internalColorFormat;
-    unsigned m_colorFormat;
-    unsigned m_internalRenderbufferFormat;
-    int m_maxTextureSize;
-    int m_sampleCount;
-    int m_packAlignment;
-    bool m_destructionInProgress;
-    bool m_isHidden;
-
-    OwnPtr<WebExternalTextureLayer> m_layer;
-
-    // All of the mailboxes that this DrawingBuffer has ever created.
-    Vector<RefPtr<MailboxInfo> > m_textureMailboxes;
-    // Mailboxes that were released by the compositor can be used again by this DrawingBuffer.
-    Deque<WebExternalTextureMailbox> m_recycledMailboxQueue;
-
-    RefPtr<ContextEvictionManager> m_contextEvictionManager;
-
-    // If the width and height of the Canvas's backing store don't
-    // match those that we were given in the most recent call to
-    // reshape(), then we need an intermediate bitmap to read back the
-    // frame buffer into. This seems to happen when CSS styles are
-    // used to resize the Canvas.
-    SkBitmap m_resizingBitmap;
-
-    // Used to flip a bitmap vertically.
-    Vector<uint8_t> m_scanline;
-};
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_PLATFORM_GRAPHICS_GPU_DRAWINGBUFFER_H_