Revert of Remove SkPaintOptionsAndroid (patchset #5 of https://codereview.chromium.org/447873003/)

Reason for revert:
Breaks the Chromium build: http://108.170.220.120:10117/builders/Canary-Chrome-Ubuntu13.10-Ninja-x86_64-DRT/builds/2469/steps/BuildContentShell_1/logs/stdio

Original issue's description:
> Remove SkPaintOptionsAndroid
>
> Committed: https://skia.googlesource.com/skia/+/f32331ffdb5de0440bb337aa7cbdd6f33e9ff23b

R=reed@google.com, mtklein@google.com, tomhudson@google.com, djsollen@google.com
TBR=djsollen@google.com, mtklein@google.com, reed@google.com, tomhudson@google.com
NOTREECHECKS=true
NOTRY=true

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/473543004

1 files changed, 75 insertions, 0 deletions

diff --git a/tests/AndroidPaintTest.cpp b/tests/AndroidPaintTest.cpp
new file mode 100644
index 0000000000..f5cf84f4f3
--- /dev/null
+++ b/tests/AndroidPaintTest.cpp
@@ -0,0 +1,75 @@
+// SkPaints only have an SkPaintOptionsAndroid if SK_BUILD_FOR_ANDROID is true.
+#ifdef SK_BUILD_FOR_ANDROID
+
+#include "SkReadBuffer.h"
+#include "SkWriteBuffer.h"
+#include "SkPaint.h"
+#include "SkPaintOptionsAndroid.h"
+#include "Test.h"
+
+static size_t Reconstruct(const SkPaint& src, SkPaint* dst) {
+    SkWriteBuffer writer;
+    src.flatten(writer);
+
+    const size_t size = writer.bytesWritten();
+    SkAutoMalloc bytes(size);
+    writer.writeToMemory(bytes.get());
+
+    SkReadBuffer reader(bytes.get(), size);
+    dst->unflatten(reader);
+
+    return size;
+}
+
+DEF_TEST(AndroidOptionsSerialization, reporter) {
+    // We want to make sure that Android's paint options survive a flatten/unflatten round trip.
+    // These are all non-default options.
+    SkPaintOptionsAndroid options;
+    options.setLanguage("ja-JP");
+    options.setFontVariant(SkPaintOptionsAndroid::kElegant_Variant);
+
+    SkPaint paint;
+    paint.setPaintOptionsAndroid(options);
+
+    SkPaint reconstructed;
+    Reconstruct(paint, &reconstructed);
+
+    REPORTER_ASSERT(reporter, options == reconstructed.getPaintOptionsAndroid());
+}
+
+DEF_TEST(AndroidOptionsSerializationReverse, reporter) {
+    // Opposite test of above: make sure the serialized default values of a paint overwrite
+    // non-default values on the paint we're unflattening into.
+    const SkPaint defaultOptions;
+
+    SkPaintOptionsAndroid options;
+    options.setLanguage("ja-JP");
+    options.setFontVariant(SkPaintOptionsAndroid::kElegant_Variant);
+    SkPaint nonDefaultOptions;
+    nonDefaultOptions.setPaintOptionsAndroid(options);
+
+    Reconstruct(defaultOptions, &nonDefaultOptions);
+
+    REPORTER_ASSERT(reporter,
+            defaultOptions.getPaintOptionsAndroid() ==
+            nonDefaultOptions.getPaintOptionsAndroid());
+}
+
+DEF_TEST(AndroidOptionsSize, reporter) {
+    // A paint with default android options should serialize to something smaller than
+    // a paint with non-default android options.
+
+    SkPaint defaultOptions;
+
+    SkPaintOptionsAndroid options;
+    options.setLanguage("ja-JP");
+    SkPaint nonDefaultOptions;
+    nonDefaultOptions.setPaintOptionsAndroid(options);
+
+    SkPaint dummy;
+
+    REPORTER_ASSERT(reporter,
+                    Reconstruct(defaultOptions, &dummy) < Reconstruct(nonDefaultOptions, &dummy));
+}
+
+#endif  // SK_BUILD_FOR_ANDROID