Improve speed of 2D canvas hibernation unit tests

third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 102 matching lines @@
     void setFilterQuality(SkFilterQuality);
     void setIsHidden(bool);
     void setImageBuffer(ImageBuffer*);
     void didDraw(const FloatRect&);
     bool writePixels(const SkImageInfo&, const void* pixels, size_t rowBytes, int x, int y);
     void flush();
     void flushGpu();
     void prepareSurfaceForPaintingIfNeeded();
     bool isHidden() { return m_isHidden; }
     OpacityMode opacityMode() { return m_opacityMode; }
+    void dontUseIdleSchedulingForTesting() { m_dontUseIdleSchedulingForTesting = true; }
 
     void beginDestruction();
     void hibernate();
     bool isHibernating() const { return m_hibernationImage.get(); }
     sk_sp<SkColorSpace> colorSpace() const { return m_colorSpace; }
 
     sk_sp<SkImage> newImageSnapshot(AccelerationHint, SnapshotReason);
 
     // The values of the enum entries must not change because they are used for
     // usage metrics histograms. New values can be added to the end.
@@ skipping 119 matching lines @@
     bool m_haveRecordedDrawCommands;
     bool m_destructionInProgress;
     SkFilterQuality m_filterQuality;
     bool m_isHidden;
     bool m_isDeferralEnabled;
     bool m_isRegisteredTaskObserver;
     bool m_renderingTaskCompletedForCurrentFrame;
     bool m_softwareRenderingWhileHidden;
     bool m_surfaceCreationFailedAtLeastOnce = false;
     bool m_hibernationScheduled = false;
+    bool m_dontUseIdleSchedulingForTesting = false;
 
     friend class Canvas2DLayerBridgeTest;
     friend class CanvasRenderingContext2DTest;
     friend class HTMLCanvasPainterTestForSPv2;
 
     uint32_t m_lastImageId;
 
     enum {
         // We should normally not have more that two active mailboxes at a time,
         // but sometime we may have three due to the async nature of mailbox handling.
@@ skipping 12 matching lines @@
     // Each element in this vector represents an IOSurface backed texture that
     // is ready to be reused.
     // Elements in this vector can safely be purged in low memory conditions.
     Vector<ImageInfo> m_imageInfoCache;
 #endif // USE_IOSURFACE_FOR_2D_CANVAS
 };
 
 } // namespace blink
 
 #endif