Change SimpleFontData::platformBoundsForGlyph to use getTextPath

LayoutTests/platform/linux/fast/block/lineboxcontain/glyphs-expected.txt

Index: LayoutTests/platform/linux/fast/block/lineboxcontain/glyphs-expected.txt
diff --git a/LayoutTests/platform/linux/fast/block/lineboxcontain/glyphs-expected.txt b/LayoutTests/platform/linux/fast/block/lineboxcontain/glyphs-expected.txt
index 2e8b02ce7c409967f72050a360223785c4c43574..6de99866df903341109f5ff09d9fa46839ea00bc 100644
--- a/LayoutTests/platform/linux/fast/block/lineboxcontain/glyphs-expected.txt
+++ b/LayoutTests/platform/linux/fast/block/lineboxcontain/glyphs-expected.txt
@@ -1,16 +1,16 @@
 layer at (0,0) size 800x600
   RenderView at (0,0) size 800x600
-layer at (0,0) size 800x282
-  RenderBlock {HTML} at (0,0) size 800x282
-    RenderBody {BODY} at (8,8) size 784x258
+layer at (0,0) size 800x280
+  RenderBlock {HTML} at (0,0) size 800x280
+    RenderBody {BODY} at (8,8) size 784x256
       RenderBlock (anonymous) at (0,0) size 784x20
         RenderText {#text} at (0,0) size 471x19
           text run at (0,0) width 248: "You should see a green rectangle below. "
           text run at (248,0) width 223: "If you see any red, the test has failed."
-      RenderBlock {P} at (0,166) size 784x16 [border: (1px solid #000000)]
+      RenderBlock {P} at (0,164) size 784x16 [border: (1px solid #000000)]
         RenderText {#text} at (1,-3) size 259x19
           text run at (1,-3) width 259: "this block should hug the lowercase glyphs."
-      RenderBlock {P} at (0,198) size 784x60
+      RenderBlock {P} at (0,196) size 784x60
         RenderBlock (floating) at (0,0) size 21x25
           RenderText {#text} at (0,-8) size 21x41
             text run at (0,-8) width 21: "T"
@@ -22,15 +22,15 @@ layer at (0,0) size 800x282
         RenderBR {BR} at (508,20) size 0x19
         RenderText {#text} at (0,40) size 428x19
           text run at (0,40) width 428: "Maybe we should do this by default for all first letters like Firefox does."
-layer at (8,28) size 384x130
-  RenderBlock {DIV} at (0,20) size 384x130 [bgcolor=#FF0000]
+layer at (8,28) size 384x128
+  RenderBlock {DIV} at (0,20) size 384x128 [bgcolor=#FF0000]
     RenderInline {SPAN} at (0,0) size 320x64 [color=#008000]
-      RenderText {#text} at (0,1) size 320x64
-        text run at (0,1) width 320: "xxxxx"
+      RenderText {#text} at (0,0) size 320x64
+        text run at (0,0) width 320: "xxxxx"
     RenderInline {SPAN} at (0,0) size 64x128 [bgcolor=#008000]
-    RenderBR {BR} at (384,1) size 0x64
-    RenderBlock {DIV} at (0,2) size 64x128 [bgcolor=#008000]
+    RenderBR {BR} at (384,0) size 0x64
+    RenderBlock {DIV} at (0,0) size 64x128 [bgcolor=#008000]
     RenderInline {SPAN} at (0,0) size 320x64 [color=#008000]
-      RenderText {#text} at (64,66) size 320x64
-        text run at (64,66) width 320: "xxxxx"
+      RenderText {#text} at (64,64) size 320x64
+        text run at (64,64) width 320: "xxxxx"
     RenderText {#text} at (0,0) size 0x0