Revert workaround due to perf regression

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

Index: third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp b/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
index 896056569e8b63c617b29734b1aefaa53d39effb..3cdccdcae65eafae28a4856602bb7a1d2da46304 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
@@ -5033,16 +5033,9 @@ void WebGLRenderingContextBase::texImageHelperHTMLCanvasElement(
     // float/integer/sRGB internal format.
     // TODO(crbug.com/622958): relax the constrains if copyTextureCHROMIUM is
     // upgraded to handle more formats.
-    bool forceSoftwareReadbackFrom2DCanvas =
-        this->canvas() && this->canvas()->document().settings() &&
-        this->canvas()
-            ->document()
-            .settings()
-            ->forceSoftwareReadbackFrom2DCanvas();
-    CanvasRenderingContext* sourceContext = canvas->renderingContext();
-    if (!sourceContext || !sourceContext->isAccelerated() ||
-        !canUseTexImageByGPU(functionID, internalformat, type) ||
-        (forceSoftwareReadbackFrom2DCanvas && sourceContext->is2d())) {
+    if (!canvas->renderingContext() ||
+        !canvas->renderingContext()->isAccelerated() ||
+        !canUseTexImageByGPU(functionID, internalformat, type)) {
       // 2D canvas has only FrontBuffer.
       texImageImpl(functionID, target, level, internalformat, xoffset, yoffset,
                    zoffset, format, type,