Remove ALL font fallback logic from Skia.

tests/AndroidPaintTest.cpp

 // 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);
-    options.setUseFontFallbacks(true);
 
     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);
-    options.setUseFontFallbacks(true);
     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.setUseFontFallbacks(true);
+    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