Disables software to accelerated canvas update on Linux AMD GPUs

third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp b/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
index 105b9f0bc65b1cef6ada0c118f2a61c63433f2ed..813a0038d041df5376d1e7ae1f4ce2892b9cbdde 100644
--- a/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
@@ -74,6 +74,7 @@
 #include "platform/graphics/StaticBitmapImage.h"
 #include "platform/graphics/UnacceleratedImageBufferSurface.h"
 #include "platform/graphics/gpu/AcceleratedImageBufferSurface.h"
+#include "platform/graphics/gpu/SharedGpuContext.h"
 #include "platform/graphics/paint/PaintCanvas.h"
 #include "platform/image-encoders/ImageEncoderUtils.h"
 #include "platform/transforms/AffineTransform.h"
@@ -1240,6 +1241,7 @@ void HTMLCanvasElement::DidMoveToNewDocument(Document& old_document) {
 
 void HTMLCanvasElement::WillDrawImageTo2DContext(CanvasImageSource* source) {
   if (ExpensiveCanvasHeuristicParameters::kEnableAccelerationToAvoidReadbacks &&
+      SharedGpuContext::AllowSoftwareToAcceleratedCanvasUpgrade() &&
       source->IsAccelerated() && !Buffer()->IsAccelerated() &&
       ShouldAccelerate(kIgnoreResourceLimitCriteria)) {
     OpacityMode opacity_mode =