Stop creating PrecomputedText in StaticLayout

No performance regressions are expected

android.text.PrecomputedTextPerfTest:
  create NoStyled Hyphenation                  : 17,849,966 -> 17,858,570: (+0.0%)
  create NoStyled Hyphenation WidthOnly        : 17,814,338 -> 17,801,205: (-0.1%)
  create NoStyled NoHyphenation                :  7,123,449 ->  7,068,308: (-0.8%)
  create NoStyled NoHyphenation WidthOnly      :  7,108,169 ->  7,074,908: (-0.5%)
  create Styled Hyphenation                    : 12,179,203 -> 12,131,020: (-0.4%)
  create Styled Hyphenation WidthOnly          : 12,112,347 -> 12,241,311: (+1.1%)
  create Styled NoHyphenation                  : 11,870,126 -> 11,880,442: (+0.1%)
  create Styled NoHyphenation WidthOnly        : 11,836,742 -> 11,860,292: (+0.2%)

android.text.StaticLayoutPerfTest:
  create PrecomputedText Balanced Hyphenation  :    697,713 ->    691,148: (-0.9%)
  create PrecomputedText Balanced NoHyphenation:    517,113 ->    498,106: (-3.7%)
  create PrecomputedText Greedy Hyphenation    :    468,243 ->    455,015: (-2.8%)
  create PrecomputedText Greedy NoHyphenation  :    479,514 ->    461,617: (-3.7%)
  create RandomText Balanced Hyphenation       : 17,183,044 -> 17,049,811: (-0.8%)
  create RandomText Balanced NoHyphenation     :  7,183,745 ->  7,025,070: (-2.2%)
  create RandomText Greedy Hyphenation         :  7,130,841 ->  6,995,785: (-1.9%)
  create RandomText Greedy NoHyphenation       :  7,122,398 ->  7,037,074: (-1.2%)

  draw PrecomputedText NoStyled                :    520,306 ->    551,465: (+6.0%)
  draw PrecomputedText NoStyled WithoutCache   :    545,773 ->    566,956: (+3.9%)
  draw PrecomputedText Styled                  :    826,044 ->    838,979: (+1.6%)
  draw PrecomputedText Styled WithoutCache     :    829,958 ->    841,749: (+1.4%)
  draw RandomText NoStyled                     :    537,079 ->    545,428: (+1.6%)
  draw RandomText NoStyled WithoutCache        :  6,473,166 ->  6,445,194: (-0.4%)
  draw RandomText Styled                       :    995,033 ->  1,015,913: (+2.1%)
  draw RandomText Styled WithoutCache          :  2,725,313 ->  2,770,604: (+1.7%)

android.widget.TextViewPrecomputedTextPerfTest:
  newLayout PrecomputedText                    :    754,311 ->    718,130: (-4.8%)
  newLayout PrecomputedText Selectable         : 17,716,239 -> 17,484,046: (-1.3%)
  newLayout RandomText                         : 16,657,952 -> 16,511,625: (-0.9%)
  newLayout RandomText Selectable              : 17,675,222 -> 17,520,653: (-0.9%)
  onDraw PrecomputedText                       :  1,307,123 ->  1,280,009: (-2.1%)
  onDraw PrecomputedText Selectable            : 17,613,031 -> 17,404,379: (-1.2%)
  onDraw RandomText                            : 17,369,256 -> 17,295,363: (-0.4%)
  onDraw RandomText Selectable                 : 18,207,392 -> 18,077,660: (-0.7%)
  onMeasure PrecomputedText                    :    748,537 ->    739,128: (-1.3%)
  onMeasure PrecomputedText Selectable         : 17,842,953 -> 17,784,459: (-0.3%)
  onMeasure RandomText                         : 16,633,454 -> 16,549,182: (-0.5%)
  onMeasure RandomText Selectable              : 18,022,286 -> 17,873,919: (-0.8%)
  setText PrecomputedText                      :    120,769 ->    119,496: (-1.1%)
  setText PrecomputedText Selectable           :    162,411 ->    150,809: (-7.1%)
  setText RandomText                           :     11,096 ->     10,956: (-1.3%)
  setText RandomText Selectable                :     48,852 ->     48,593: (-0.5%)

Bug: 72998298
Test: atest CtsWidgetTestCases:EditTextTest
    CtsWidgetTestCases:TextViewFadingEdgeTest
    FrameworksCoreTests:TextViewFallbackLineSpacingTest
    FrameworksCoreTests:TextViewTest FrameworksCoreTests:TypefaceTest
    CtsGraphicsTestCases:TypefaceTest CtsWidgetTestCases:TextViewTest
    CtsTextTestCases FrameworksCoreTests:android.text
    CtsWidgetTestCases:TextViewPrecomputedTextTest

Change-Id: I3af758ecc5a15975c4e59c6378faf7c14c3bd65b