Pack repeated code in tex(Sub)Image2D and texSubImage3D into helper func

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

Index: third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.h
diff --git a/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.h b/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.h
index f6738b88b58248e6ae101cf6b1e65dac499bdb38..415275a6e49fd79d9e7b8e165d2f25fcd70b18e3 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.h
+++ b/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.h
@@ -780,6 +780,12 @@ protected:
         CopyTexImage,
         CompressedTexImage
     };
+    enum TexImageFunctionName {
+        TexImage2D,
+        TexSubImage2D,
+        TexImage3D,
+        TexSubImage3D
+    };
     enum TexImageByGPUType {
         TexImage2DByGPU,
         TexSubImage2DByGPU,
@@ -819,6 +825,9 @@ protected:
     // null.  Otherwise, return the texture bound to the target.
     WebGLTexture* validateTextureBinding(const char* functionName, GLenum target);
 
+    // Wrapper function for validateTexture2D(3D)Binding, used in texImageHelper functions.
+    virtual WebGLTexture* validateTexImageBinding(const char*, TexImageFunctionName, GLenum);
+
     // Helper function to check texture 2D target and texture bound to the target.
     // Generate GL errors and return 0 if target is invalid or texture bound is
     // null.  Otherwise, return the texture bound to the target.
@@ -1088,6 +1097,16 @@ protected:
     CrossThreadWeakPersistentThisPointer<WebGLRenderingContextBase> createWeakThisPointer() { return CrossThreadWeakPersistentThisPointer<WebGLRenderingContextBase>(this); }
 
     ImageBitmap* transferToImageBitmapBase();
+
+    // Helper functions for tex(Sub)Image2D && texSubImage3D
+    void texImageHelperDOMArrayBufferView(TexImageFunctionName, GLenum, GLint, GLint, GLsizei, GLsizei, GLint, GLenum, GLenum, GLsizei, GLint, GLint, GLint, DOMArrayBufferView*);
+    void texImageHelperImageData(TexImageFunctionName, GLenum, GLint, GLint, GLint, GLenum, GLenum, GLsizei, GLint, GLint, GLint, ImageData*);
+    bool texImageHelperHTMLImageElement(TexImageFunctionName, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLImageElement*, ExceptionState&);
+    WebGLTexture* texImageHelperHTMLCanvasElement(TexImageFunctionName, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLCanvasElement*, ExceptionState&);
+    WebGLTexture* texImageHelperHTMLVideoElement(TexImageFunctionName, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLVideoElement*, ExceptionState&);
+    void texImageHelperImageBitmap(TexImageFunctionName, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, ImageBitmap*, ExceptionState&);
+    static const char* getTexImageFunctionName(TexImageFunctionName);
+
 private:
     WebGLRenderingContextBase(HTMLCanvasElement*, OffscreenCanvas*, PassOwnPtr<WebGraphicsContext3DProvider>, const WebGLContextAttributes&);
     static PassOwnPtr<WebGraphicsContext3DProvider> createContextProviderInternal(HTMLCanvasElement*, ScriptState*, WebGLContextAttributes, unsigned);