Removing canvas rendering mode switching feature

third_party/WebKit/Source/platform/graphics/ImageBuffer.cpp

 /*
  * Copyright (c) 2008, Google Inc. All rights reserved.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 20 matching lines @@
  */
 
 #include "platform/graphics/ImageBuffer.h"
 
 #include <memory>
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/command_buffer/common/mailbox.h"
 #include "gpu/command_buffer/common/sync_token.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/geometry/IntRect.h"
-#include "platform/graphics/ExpensiveCanvasHeuristicParameters.h"
+#include "platform/graphics/CanvasHeuristicParameters.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/ImageBufferClient.h"
 #include "platform/graphics/RecordingImageBufferSurface.h"
 #include "platform/graphics/StaticBitmapImage.h"
 #include "platform/graphics/UnacceleratedImageBufferSurface.h"
 #include "platform/graphics/gpu/DrawingBuffer.h"
 #include "platform/graphics/gpu/Extensions3DUtil.h"
 #include "platform/graphics/paint/PaintImage.h"
 #include "platform/graphics/paint/PaintRecord.h"
 #include "platform/graphics/skia/SkiaUtils.h"
@@ skipping 88 matching lines @@
                               int y) {
   return surface_->WritePixels(info, pixels, row_bytes, x, y);
 }
 
 bool ImageBuffer::IsSurfaceValid() const {
   return surface_->IsValid();
 }
 
 void ImageBuffer::FinalizeFrame() {
   if (IsAccelerated() &&
-      ExpensiveCanvasHeuristicParameters::kGPUReadbackForcesNoAcceleration &&
+      CanvasHeuristicParameters::kGPUReadbackForcesNoAcceleration &&
       !RuntimeEnabledFeatures::canvas2dFixedRenderingModeEnabled()) {
     if (gpu_readback_invoked_in_current_frame_) {
       gpu_readback_successive_frames_++;
       gpu_readback_invoked_in_current_frame_ = false;
     } else {
       gpu_readback_successive_frames_ = 0;
     }
 
     if (gpu_readback_successive_frames_ >=
-        ExpensiveCanvasHeuristicParameters::kGPUReadbackMinSuccessiveFrames) {
+        CanvasHeuristicParameters::kGPUReadbackMinSuccessiveFrames) {
       DisableAcceleration();
     }
   }
 
   surface_->FinalizeFrame();
 }
 
 void ImageBuffer::DoPaintInvalidation(const FloatRect& dirty_rect) {
   surface_->DoPaintInvalidation(dirty_rect);
 }
@@ skipping 409 matching lines @@
   DCHECK(MIMETypeRegistry::IsSupportedImageMIMETypeForEncoding(mime_type));
 
   Vector<unsigned char> result;
   if (!EncodeImage(mime_type, quality, &result))
     return "data:,";
 
   return "data:" + mime_type + ";base64," + Base64Encode(result);
 }
 
 }  // namespace blink