DrawingBuffer cleanup: Part 1 of many

third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.h

 /*
  * 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
@@ skipping 305 matching lines @@
     GLenum creationInternalColorFormat = 0;
     GLenum colorFormat = 0;
   };
 
   // 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 {
     DISALLOW_NEW();
     GLuint textureId = 0;
     GLuint imageId = 0;
-    bool immutable = false;
     TextureParameters parameters;
   };
 
   struct MailboxInfo : public RefCounted<MailboxInfo> {
     MailboxInfo() = default;
     gpu::Mailbox mailbox;
     TextureInfo textureInfo;
     IntSize size;
 
    private:
@@ skipping 19 matching lines @@
   TextureParameters chromiumImageTextureParameters();
 
   // The texture parameters to use for a default texture.
   TextureParameters defaultTextureParameters();
 
   // Creates and binds a texture with the given parameters. Returns 0 on
   // failure, or the newly created texture id on success. The caller takes
   // ownership of the newly created texture.
   GLuint createColorTexture(const TextureParameters&);
 
-  // Create the depth/stencil and multisample buffers, if needed.
-  bool resizeMultisampleFramebuffer(const IntSize&);
-  void resizeDepthStencil(const IntSize&);
-
   // Attempts to allocator storage for, or resize all buffers. Returns whether
   // the operation was successful.
   bool resizeDefaultFramebuffer(const IntSize&);
 
   void clearPlatformLayer();
 
   PassRefPtr<MailboxInfo> takeRecycledMailbox();
   PassRefPtr<MailboxInfo> createNewMailbox(const TextureInfo&);
   void deleteMailbox(const gpu::Mailbox&, const gpu::SyncToken&);
   void freeRecycledMailboxes();
@@ skipping 37 matching lines @@
   void clearChromiumImageAlpha(const TextureInfo&);
 
   // Tries to create a CHROMIUM_image backed texture if
   // RuntimeEnabledFeatures::webGLImageChromiumEnabled() is true. On failure,
   // or if the flag is false, creates a default texture.
   TextureInfo createTextureAndAllocateMemory(const IntSize&);
 
   // Creates and allocates space for a default texture.
   TextureInfo createDefaultTextureAndAllocateMemory(const IntSize&);
 
-  void resizeTextureMemory(TextureInfo*, const IntSize&);
-
   // Attaches |m_colorBuffer| to |m_fbo|, which is always the source for read
   // operations.
   void attachColorBufferToReadFramebuffer();
 
   // Whether the WebGL client desires an explicit resolve. This is
   // implemented by forwarding all draw operations to a multisample
   // renderbuffer, which is resolved before any read operations or swaps.
   bool wantExplicitResolve();
 
   // Whether the WebGL client wants a depth or stencil buffer.
@@ skipping 116 matching lines @@
   // RuntimeEnabledFeatures::webGLImageChromiumEnabled() call with
   // shouldUseChromiumImage() calls, and set m_chromiumImageUsage to
   // DisallowChromiumImage in the case of OffscreenCanvas.
   ChromiumImageUsage m_chromiumImageUsage;
   bool shouldUseChromiumImage();
 };
 
 }  // namespace blink
 
 #endif  // DrawingBuffer_h