Improve metrics for display list canvas fallback reason

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.h

 /*
  * Copyright (C) 2009 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 969 matching lines @@
     CompressedTexImage
   };
 
   // This must stay in sync with WebMediaPlayer::TexImageFunctionID.
   enum TexImageFunctionID {
     TexImage2D,
     TexSubImage2D,
     TexImage3D,
     TexSubImage3D
   };
-  enum TexImageByGPUType {
-    TexImage2DByGPU,
-    TexSubImage2DByGPU,
-    TexSubImage3DByGPU
-  };
+
+  static SnapshotReason functionIDToSnapshotReason(TexImageFunctionID);
+
   enum TexImageDimension { Tex2D, Tex3D };
   void texImage2DBase(GLenum target,
                       GLint level,
                       GLint internalformat,
                       GLsizei width,
                       GLsizei height,
                       GLint border,
                       GLenum format,
                       GLenum type,
                       const void* pixels);
@@ skipping 90 matching lines @@
       }
     } else {
       DCHECK_EQ(depth, 1);
       DCHECK_EQ(unpackImageHeight, 0);
     }
     return true;
   }
 
   // Copy from the source directly to the texture via the gpu, without a
   // read-back to system memory.  Source could be canvas or imageBitmap.
-  void texImageByGPU(TexImageByGPUType,
+  void texImageByGPU(TexImageFunctionID,
                      WebGLTexture*,
                      GLenum target,
                      GLint level,
                      GLint internalformat,
                      GLenum type,
                      GLint xoffset,
                      GLint yoffset,
                      GLint zoffset,
                      CanvasImageSource*,
                      const IntRect& sourceSubRectangle);
@@ skipping 523 matching lines @@
   WebGLRenderingContextBase(HTMLCanvasElement*,
                             OffscreenCanvas*,
                             std::unique_ptr<WebGraphicsContext3DProvider>,
                             const CanvasContextCreationAttributes&,
                             unsigned);
   static std::unique_ptr<WebGraphicsContext3DProvider>
   createContextProviderInternal(HTMLCanvasElement*,
                                 ScriptState*,
                                 const CanvasContextCreationAttributes&,
                                 unsigned);
-  void texImageCanvasByGPU(HTMLCanvasElement*,
+  void texImageCanvasByGPU(TexImageFunctionID,
+                           HTMLCanvasElement*,
                            GLuint,
                            GLenum,
                            GLenum,
                            GLint,
                            GLint,
                            GLint,
                            const IntRect& sourceSubRectangle);
   void texImageBitmapByGPU(ImageBitmap*, GLuint, GLenum, GLenum, GLint, bool);
 
   const unsigned m_version;
 
   bool isPaintable() const final { return drawingBuffer(); }
 };
 
 DEFINE_TYPE_CASTS(WebGLRenderingContextBase,
                   CanvasRenderingContext,
                   context,
                   context->is3d(),
                   context.is3d());
 
 }  // namespace blink
 
 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(
     blink::WebGLRenderingContextBase::TextureUnitState);
 
 #endif  // WebGLRenderingContextBase_h