Merge third_party/skia/src from https://chromium.googlesource.com/a/external/skia/src.git at 7bdad2ae66bb289392f2b5d39dac783db1baf683

This commit was generated by merge_from_chromium.py.

Change-Id: I61b493f8fe1c4ac540f33f5f843cb89e80de2716

2 files changed, 13 insertions, 8 deletions

diff --git a/pdf/SkPDFStream.cpp b/pdf/SkPDFStream.cpp
index 4ae1f39d..e5709764 100644
--- a/pdf/SkPDFStream.cpp
+++ b/pdf/SkPDFStream.cpp
@@ -18,10 +18,8 @@ static bool skip_compression(SkPDFCatalog* catalog) {
                     SkPDFDocument::kFavorSpeedOverSize_Flags);
 }
 
-SkPDFStream::SkPDFStream(SkStream* stream)
-    : fState(kUnused_State),
-      fData(stream) {
-    SkSafeRef(stream);
+SkPDFStream::SkPDFStream(SkStream* stream) : fState(kUnused_State) {
+    setData(stream);
 }
 
 SkPDFStream::SkPDFStream(SkData* data) : fState(kUnused_State) {
@@ -30,9 +28,8 @@ SkPDFStream::SkPDFStream(SkData* data) : fState(kUnused_State) {
 
 SkPDFStream::SkPDFStream(const SkPDFStream& pdfStream)
         : SkPDFDict(),
-          fState(kUnused_State),
-          fData(pdfStream.fData.get()) {
-    fData.get()->ref();
+          fState(kUnused_State) {
+    setData(pdfStream.fData.get());
     bool removeLength = true;
     // Don't uncompress an already compressed stream, but we could.
     if (pdfStream.fState == kCompressed_State) {
@@ -64,7 +61,8 @@ void SkPDFStream::emitObject(SkWStream* stream, SkPDFCatalog* catalog,
 
     this->INHERITED::emitObject(stream, catalog, false);
     stream->writeText(" stream\n");
-    stream->write(fData->getMemoryBase(), fData->getLength());
+    stream->writeStream(fData.get(), fData->getLength());
+    fData->rewind();
     stream->writeText("\nendstream");
 }
 
@@ -89,6 +87,11 @@ void SkPDFStream::setData(SkData* data) {
 }
 
 void SkPDFStream::setData(SkStream* stream) {
+    // Code assumes that the stream starts at the beginning and is rewindable.
+    if (stream) {
+        SkASSERT(stream->getPosition() == 0);
+        SkASSERT(stream->rewind());
+    }
     fData.reset(stream);
     SkSafeRef(stream);
 }
diff --git a/pdf/SkPDFStream.h b/pdf/SkPDFStream.h
index ed18510c..d7ff115b 100644
--- a/pdf/SkPDFStream.h
+++ b/pdf/SkPDFStream.h
@@ -21,6 +21,8 @@ class SkPDFCatalog;
 
     A stream object in a PDF.  Note, all streams must be indirect objects (via
     SkObjRef).
+    TODO(vandebo): SkStream should be replaced by SkStreamRewindable when that
+    is feasible.
 */
 class SkPDFStream : public SkPDFDict {
 public: