Prepare NativeLineBreaker.LineBreaks to be public API

This is a ground work of making NativeLineBreaker/MeasuredParagraph
public.

This CL rename NativeLineBreaker.LineBreaks to NativeLineBreaker.Result.
This CL also moving array re-allocation logic from native code to Java in
StaticLayout. Ideally, we can remove array but this CL keeps array since
that introduces additional complexity.

Here is a raw perf test result:
android.text.StaticLayoutPerfTest:
  create
    PrecomputedText Balanced Hyphenation  :    667 ->    810: (+143, +21.4%)
    PrecomputedText Balanced NoHyphenation:    510 ->    594: ( +84, +16.5%)
    PrecomputedText Greedy Hyphenation    :    446 ->    530: ( +84, +18.8%)
    PrecomputedText Greedy NoHyphenation  :    448 ->    533: ( +85, +19.0%)
    RandomText Balanced Hyphenation       : 17,982 -> 18,176: (+194, +1.1%)
    RandomText Balanced NoHyphenation     :  7,348 ->  7,461: (+113, +1.5%)
    RandomText Greedy Hyphenation         :  7,293 ->  7,330: ( +37, +0.5%)
    RandomText Greedy NoHyphenation       :  7,289 ->  7,352: ( +63, +0.9%)
  draw
    PrecomputedText NoStyle               :    645 ->    645: (  +0, +0.0%)
    PrecomputedText Style                 :    941 ->    947: (  +6, +0.6%)
    RandomText NoStyle                    :    541 ->    543: (  +2, +0.4%)
    RandomText Style                      :    751 ->    753: (  +2, +0.3%)
android.widget.TextViewPrecomputedTextPerfTest:
  newLayout
    PrecomputedText                       :    839 ->    983: (+144, +17.2%)
    PrecomputedText Selectable            :    883 ->  1,053: (+170, +19.3%)
    RandomText                            : 17,594 -> 17,761: (+167, +0.9%)
    RandomText Selectable                 : 18,331 -> 18,695: (+364, +2.0%)
  onDraw
    PrecomputedText                       :  1,233 ->  1,385: (+152, +12.3%)
    PrecomputedText Selectable            :  1,164 ->  1,207: ( +43, +3.7%)
    RandomText                            : 18,836 -> 19,042: (+206, +1.1%)
    RandomText Selectable                 : 19,025 -> 19,092: ( +67, +0.4%)
  onMeasure
    PrecomputedText                       :    853 ->    991: (+138, +16.2%)
    PrecomputedText Selectable            :  1,077 ->  1,234: (+157, +14.6%)
    RandomText                            : 17,613 -> 17,913: (+300, +1.7%)
    RandomText Selectable                 : 18,696 -> 18,922: (+226, +1.2%)
  setText
    PrecomputedText                       :    133 ->    136: (  +3, +2.3%)
    PrecomputedText Selectable            :    190 ->    192: (  +2, +1.1%)
    RandomText                            :     10 ->     11: (  +1, +10.0%)
    RandomText Selectable                 :     49 ->     50: (  +1, +2.0%)

Bug: 112327179
Test: atest FrameworksCoreTests CtsGraphicsTestCases CtsWidgetTestCases
    CtsTextTestCases

Change-Id: I25f41dacf73e00a859f43331bc53f8d123116192