Make sure RecordingImageBufferSurface's current frame is valid

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

Index: third_party/WebKit/Source/platform/graphics/RecordingImageBufferSurface.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/RecordingImageBufferSurface.cpp b/third_party/WebKit/Source/platform/graphics/RecordingImageBufferSurface.cpp
index e9b89e7fa8ec5881a70570e7158e1f190d053590..f921797026164ff8b99681c24537d1014264917e 100644
--- a/third_party/WebKit/Source/platform/graphics/RecordingImageBufferSurface.cpp
+++ b/third_party/WebKit/Source/platform/graphics/RecordingImageBufferSurface.cpp
@@ -258,8 +258,8 @@ void RecordingImageBufferSurface::didDraw(const FloatRect& rect)
 
 bool RecordingImageBufferSurface::finalizeFrameInternal(FallbackReason* fallbackReason)
 {
-    ASSERT(!m_fallbackSurface);
-    ASSERT(m_currentFrame);
+    CHECK(!m_fallbackSurface);
+    CHECK(m_currentFrame);
     ASSERT(m_currentFrame->getRecordingCanvas());
     ASSERT(fallbackReason);
     ASSERT(*fallbackReason == FallbackReasonUnknown);
@@ -270,7 +270,8 @@ bool RecordingImageBufferSurface::finalizeFrameInternal(FallbackReason* fallback
             m_previousFrame = fromSkSp(m_currentFrame->finishRecordingAsPicture());
             initializeCurrentFrame();
         }
-        return m_currentFrame.get();
+        CHECK(m_currentFrame);
+        return true;
     }
 
     if (!m_frameWasCleared) {