Remove redundant reading and writing of data about SharedBuffer.

third_party/WebKit/Source/core/loader/resource/ImageResource.cpp

Index: third_party/WebKit/Source/core/loader/resource/ImageResource.cpp
diff --git a/third_party/WebKit/Source/core/loader/resource/ImageResource.cpp b/third_party/WebKit/Source/core/loader/resource/ImageResource.cpp
index 2a19d222e787f6c3f67a161f9452d754c963fe4a..5614076e7293b4870119732be7d387486e811f48 100644
--- a/third_party/WebKit/Source/core/loader/resource/ImageResource.cpp
+++ b/third_party/WebKit/Source/core/loader/resource/ImageResource.cpp
@@ -374,12 +374,6 @@ void ImageResource::Finish(double load_finish_time) {
       UpdateImageAndClearBuffer();
   } else {
     UpdateImage(Data(), ImageResourceContent::kUpdateImage, true);
-    // As encoded image data can be created from m_image  (see
-    // ImageResource::resourceBuffer(), we don't have to keep m_data. Let's
-    // clear this. As for the lifetimes of m_image and m_data, see this
-    // document:
-    // https://docs.google.com/document/d/1v0yTAZ6wkqX2U_M6BNIGUJpM1s0TIw1VsqpxoL7aciY/edit?usp=sharing
-    ClearData();
   }
   Resource::Finish(load_finish_time);
 }