Refactoring source image usage in CanvasRenderingContext2D

Source/core/html/canvas/WebGLRenderingContextBase.cpp

Index: Source/core/html/canvas/WebGLRenderingContextBase.cpp
diff --git a/Source/core/html/canvas/WebGLRenderingContextBase.cpp b/Source/core/html/canvas/WebGLRenderingContextBase.cpp
index 17d2a38b73aa29b8db6b3aaf639a0360bd4c4091..55316929862abeaa1e212a8d740eebbc30f4278b 100644
--- a/Source/core/html/canvas/WebGLRenderingContextBase.cpp
+++ b/Source/core/html/canvas/WebGLRenderingContextBase.cpp
@@ -5094,7 +5094,7 @@ bool WebGLRenderingContextBase::validateHTMLImageElement(const char* functionNam
         synthesizeGLError(GL_INVALID_VALUE, functionName, "invalid image");
         return false;
     }
-    if (wouldTaintOrigin(image)) {
+    if (image->wouldTaintOrigin(canvas()->securityOrigin())) {
         exceptionState.throwSecurityError("The cross-origin image at " + url.elidedString() + " may not be loaded.");
         return false;
     }
@@ -5107,7 +5107,7 @@ bool WebGLRenderingContextBase::validateHTMLCanvasElement(const char* functionNa
         synthesizeGLError(GL_INVALID_VALUE, functionName, "no canvas");
         return false;
     }
-    if (wouldTaintOrigin(canvas)) {
+    if (canvas->wouldTaintOrigin(this->canvas()->securityOrigin())) {
         exceptionState.throwSecurityError("Tainted canvases may not be loaded.");
         return false;
     }
@@ -5120,7 +5120,7 @@ bool WebGLRenderingContextBase::validateHTMLVideoElement(const char* functionNam
         synthesizeGLError(GL_INVALID_VALUE, functionName, "no video");
         return false;
     }
-    if (wouldTaintOrigin(video)) {
+    if (video->wouldTaintOrigin(canvas()->securityOrigin())) {
         exceptionState.throwSecurityError("The video element contains cross-origin data, and may not be loaded.");
         return false;
     }