Remove SkDynamicMemoryWStream::getOffset.

This method does the same thing as ::bytesWritten but has a confusing
name. It appears there are no external users, so remove it.

Change-Id: I06aed269200c34c2dda36605092f8ea37fcec693
Reviewed-on: https://skia-review.googlesource.com/6188
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
diff --git a/tests/PDFGlyphsToUnicodeTest.cpp b/tests/PDFGlyphsToUnicodeTest.cpp
index a256c93..0d87cd7d 100644
--- a/tests/PDFGlyphsToUnicodeTest.cpp
+++ b/tests/PDFGlyphsToUnicodeTest.cpp
@@ -90,7 +90,7 @@
 endbfrange\n";
 
     REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResult,
-                                            buffer.getOffset()));
+                                            buffer.bytesWritten()));
 
     // Remove characters and ranges.
     buffer.reset();
@@ -108,7 +108,7 @@
 endbfrange\n";
 
     REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResultChop1,
-                                            buffer.getOffset()));
+                                            buffer.bytesWritten()));
 
     // Remove characters from range to downdrade it to one char.
     buffer.reset();
@@ -122,7 +122,7 @@
 endbfchar\n";
 
     REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResultChop2,
-                                            buffer.getOffset()));
+                                            buffer.bytesWritten()));
 
     buffer.reset();
 
@@ -139,7 +139,7 @@
 
     REPORTER_ASSERT(reporter, stream_equals(buffer, 0,
                                             expectedResultSingleBytes,
-                                            buffer.getOffset()));
+                                            buffer.bytesWritten()));
 
     glyphToUnicode.reset();
     glyphsInSubset.reset();
@@ -176,5 +176,5 @@
 endbfrange\n";
 
     REPORTER_ASSERT(reporter, stream_equals(buffer2, 0, expectedResult2,
-                                            buffer2.getOffset()));
+                                            buffer2.bytesWritten()));
 }