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..71fdd650b744a28544082860d147cf1ee5fb72e6 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.h
+++ b/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.h
@@ -412,6 +412,7 @@ public:
 
     void setFilterQuality(SkFilterQuality) override;
     bool isWebGL2OrHigher() { return version() >= 2; }
+    virtual WebGLTexture* validateTexture3DBinding(const char* functionName, GLenum target) = 0;
 
 protected:
     friend class EXTDisjointTimerQuery;
@@ -1088,6 +1089,15 @@ protected:
     CrossThreadWeakPersistentThisPointer<WebGLRenderingContextBase> createWeakThisPointer() { return CrossThreadWeakPersistentThisPointer<WebGLRenderingContextBase>(this); }
 
     ImageBitmap* transferToImageBitmapBase();
+
+    // Helper functions for tex(Sub)Image2D && texSubImage3D
+    void texImageHelperDOMArrayBufferView(const char*, GLenum, GLint, GLint, GLsizei, GLsizei, GLint, GLenum, GLenum, GLsizei, GLint, GLint, GLint, DOMArrayBufferView*);
+    void texImageHelperImageData(const char*, GLenum, GLint, GLint, GLint, GLenum, GLenum, GLsizei, GLint, GLint, GLint, ImageData*);
+    bool texImageHelperHTMLImageElement(const char*, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLImageElement*, ExceptionState&);
+    WebGLTexture* texImageHelperHTMLCanvasElement(const char*, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLCanvasElement*, ExceptionState&);
+    WebGLTexture* texImageHelperHTMLVideoElement(const char*, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLVideoElement*, ExceptionState&);
+    void texImageHelperImageBitmap(const char*, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, ImageBitmap*, ExceptionState&);
+
 private:
     WebGLRenderingContextBase(HTMLCanvasElement*, OffscreenCanvas*, PassOwnPtr<WebGraphicsContext3DProvider>, const WebGLContextAttributes&);
     static PassOwnPtr<WebGraphicsContext3DProvider> createContextProviderInternal(HTMLCanvasElement*, ScriptState*, WebGLContextAttributes, unsigned);