Update SVG text layout to use shaped glyph data & go fast (O(n^2)->O(n))

third_party/WebKit/LayoutTests/svg/text/lengthAdjust-text-metrics-expected.txt

Index: third_party/WebKit/LayoutTests/svg/text/lengthAdjust-text-metrics-expected.txt
diff --git a/third_party/WebKit/LayoutTests/svg/text/lengthAdjust-text-metrics-expected.txt b/third_party/WebKit/LayoutTests/svg/text/lengthAdjust-text-metrics-expected.txt
index 917f66195f9e427d97bce0db0861e67a450b7aed..08c5223f2604ecb1f51cedf73e0876f85eae5116 100644
--- a/third_party/WebKit/LayoutTests/svg/text/lengthAdjust-text-metrics-expected.txt
+++ b/third_party/WebKit/LayoutTests/svg/text/lengthAdjust-text-metrics-expected.txt
@@ -14,7 +14,7 @@ Test getComputedTextLength() API
 PASS lengthToString(svgText.getComputedTextLength()) is "200.0"
 
 Test getSubStringLength() API
-FAIL lengthToString(svgText.getSubStringLength(0, 1)) should be 61.5. Was 66.6.
+FAIL lengthToString(svgText.getSubStringLength(0, 1)) should be 61.5. Was 54.5.
 FAIL lengthToString(svgText.getSubStringLength(0, 2)) should be 117.9. Was 115.2.
 FAIL lengthToString(svgText.getSubStringLength(0, 3)) should be 169.2. Was 169.7.
 PASS lengthToString(svgText.getSubStringLength(0, 4)) is "200.0"
@@ -27,19 +27,19 @@ FAIL lengthToString(svgText.getSubStringLength(3, 1)) should be 30.8. Was 30.3.
 
 Test getStartPositionOfChar() API
 PASS pointToString(svgText.getStartPositionOfChar(0)) is "(10.0,20.0)"
-FAIL pointToString(svgText.getStartPositionOfChar(1)) should be (71.5,20.0). Was (76.6,20.0).
+FAIL pointToString(svgText.getStartPositionOfChar(1)) should be (71.5,20.0). Was (64.5,20.0).
 FAIL pointToString(svgText.getStartPositionOfChar(2)) should be (127.9,20.0). Was (125.2,20.0).
 FAIL pointToString(svgText.getStartPositionOfChar(3)) should be (179.2,20.0). Was (179.7,20.0).
 
 Test getEndPositionOfChar() API
-FAIL pointToString(svgText.getEndPositionOfChar(0)) should be (71.5,20.0). Was (76.6,20.0).
+FAIL pointToString(svgText.getEndPositionOfChar(0)) should be (71.5,20.0). Was (64.5,20.0).
 FAIL pointToString(svgText.getEndPositionOfChar(1)) should be (127.9,20.0). Was (125.2,20.0).
 FAIL pointToString(svgText.getEndPositionOfChar(2)) should be (179.2,20.0). Was (179.7,20.0).
 PASS pointToString(svgText.getEndPositionOfChar(3)) is "(210.0,20.0)"
 
 Test getExtentOfChar() API
-FAIL rectToString(svgText.getExtentOfChar(0)) should be (10.0,1.9)-(61.5x22.3). Was (10.0,2.0)-(66.6x22.0).
-FAIL rectToString(svgText.getExtentOfChar(1)) should be (71.5,1.9)-(56.4x22.3). Was (76.6,2.0)-(48.6x22.0).
+FAIL rectToString(svgText.getExtentOfChar(0)) should be (10.0,1.9)-(61.5x22.3). Was (10.0,2.0)-(54.5x22.0).
+FAIL rectToString(svgText.getExtentOfChar(1)) should be (71.5,1.9)-(56.4x22.3). Was (64.5,2.0)-(60.6x22.0).
 FAIL rectToString(svgText.getExtentOfChar(2)) should be (127.9,1.9)-(51.3x22.3). Was (125.2,2.0)-(54.5x22.0).
 FAIL rectToString(svgText.getExtentOfChar(3)) should be (179.2,1.9)-(30.8x22.3). Was (179.7,2.0)-(30.3x22.0).
 
@@ -57,9 +57,9 @@ PASS svgText.getCharNumAtPosition(point) is -1
 > Testing point=(10.1,10.0)
 PASS svgText.getCharNumAtPosition(point) is 0
 > Testing point=(71.4,10.0)
-PASS svgText.getCharNumAtPosition(point) is 0
+FAIL svgText.getCharNumAtPosition(point) should be 0. Was 1.
 > Testing point=(71.6,10.0)
-FAIL svgText.getCharNumAtPosition(point) should be 1. Was 0.
+PASS svgText.getCharNumAtPosition(point) is 1
 > Testing point=(127.8,10.0)
 FAIL svgText.getCharNumAtPosition(point) should be 1. Was 2.
 > Testing point=(128.0,10.0)