SkPDF: Always get advances at unitsPerEm.

  * Work around BUG=chromium:696356
  * SkTestScalerContext needs a return a em-size.
  * SkPDFFont::MakeVectorCache which always produces a glyph
    cache at emsize.  Replaces vector_cache().
  * Stop looking at fLastGlyphID and fEmSize in TypefaceMetrics.

Change-Id: I28d93b8f62d461a60fa046e9aaf7fa6d116a7ee5
Reviewed-on: https://skia-review.googlesource.com/9324
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/src/fonts/SkTestScalerContext.h b/src/fonts/SkTestScalerContext.h
index 20cce91ab9..5b2ec4f5a2 100644
--- a/src/fonts/SkTestScalerContext.h
+++ b/src/fonts/SkTestScalerContext.h
@@ -84,8 +84,7 @@ protected:
     }
 
     int onGetUPEM() const override {
-        SkASSERT(0);  // don't expect to get here
-        return 1;
+        return 2048;
     }
 
     void onGetFamilyName(SkString* familyName) const override;