Update comments regarding image caching

third_party/WebKit/Source/core/fetch/ImageResource.cpp

Index: third_party/WebKit/Source/core/fetch/ImageResource.cpp
diff --git a/third_party/WebKit/Source/core/fetch/ImageResource.cpp b/third_party/WebKit/Source/core/fetch/ImageResource.cpp
index 54b5b9b3c37832e5aba061365362ced1709161fe..93853b0271992d367300e8e9b9334bc069ff02a5 100644
--- a/third_party/WebKit/Source/core/fetch/ImageResource.cpp
+++ b/third_party/WebKit/Source/core/fetch/ImageResource.cpp
@@ -451,8 +451,9 @@ bool ImageResource::currentFrameKnownToBeOpaque(const LayoutObject* layoutObject
     blink::Image* image = this->image();
     if (image->isBitmapImage()) {
         TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "PaintImage", "data", InspectorPaintImageEvent::data(layoutObject, *this));
-        // BitmapImage::currentFrameKnownToBeOpaque() conservatively returns true for uncached
-        // frames. To get an accurate answer, we pre-cache the current frame metadata.
+        // BitmapImage::currentFrameKnownToBeOpaque() conservatively returns false for uncached
+        // frames. To increase the change of an accurate answer, we pre-cache the current frame
+        // metadata.
         image->imageForCurrentFrame();
     }
     return image->currentFrameKnownToBeOpaque();