Fix RGBA alpha parsing and serialization to adhere to W3 standard.

third_party/WebKit/LayoutTests/platform/win/fast/backgrounds/background-leakage-transforms-expected.txt

Index: third_party/WebKit/LayoutTests/platform/win/fast/backgrounds/background-leakage-transforms-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/win/fast/backgrounds/background-leakage-transforms-expected.txt b/third_party/WebKit/LayoutTests/platform/win/fast/backgrounds/background-leakage-transforms-expected.txt
index 1db8f0bd52219956b873f3fed944157656ac25e7..0f25cb9de0a854c36d98d3141977aafa8e2a2a68 100644
--- a/third_party/WebKit/LayoutTests/platform/win/fast/backgrounds/background-leakage-transforms-expected.txt
+++ b/third_party/WebKit/LayoutTests/platform/win/fast/backgrounds/background-leakage-transforms-expected.txt
@@ -13,10 +13,10 @@ layer at (0,0) size 785x852 backgroundClip at (0,0) size 785x600 clip at (0,0) s
         LayoutText {#text} at (288,118) size 4x17
           text run at (288,118) width 4: " "
         LayoutBlockFlow {DIV} at (302,10) size 268x128 [bgcolor=#808080]
-          LayoutBlockFlow {DIV} at (12,12) size 110x100 [bgcolor=#FFFFFF] [border: (20px solid #0000FF7F)]
+          LayoutBlockFlow {DIV} at (12,12) size 110x100 [bgcolor=#FFFFFF] [border: (20px solid #0000FF80)]
           LayoutText {#text} at (132,108) size 4x17
             text run at (132,108) width 4: " "
-          LayoutBlockFlow {DIV} at (146,12) size 110x100 [bgcolor=#FFFFFF] [border: (20px double #0000FF7F)]
+          LayoutBlockFlow {DIV} at (146,12) size 110x100 [bgcolor=#FFFFFF] [border: (20px double #0000FF80)]
           LayoutText {#text} at (0,0) size 0x0
         LayoutText {#text} at (0,0) size 0x0
 layer at (8,156) size 769x148
@@ -30,10 +30,10 @@ layer at (8,156) size 769x148
     LayoutText {#text} at (288,118) size 4x17
       text run at (288,118) width 4: " "
     LayoutBlockFlow {DIV} at (302,10) size 268x128 [bgcolor=#808080]
-      LayoutBlockFlow {DIV} at (12,12) size 110x100 [bgcolor=#FFFFFF] [border: (20px solid #0000FF7F)]
+      LayoutBlockFlow {DIV} at (12,12) size 110x100 [bgcolor=#FFFFFF] [border: (20px solid #0000FF80)]
       LayoutText {#text} at (132,108) size 4x17
         text run at (132,108) width 4: " "
-      LayoutBlockFlow {DIV} at (146,12) size 110x100 [bgcolor=#FFFFFF] [border: (20px double #0000FF7F)]
+      LayoutBlockFlow {DIV} at (146,12) size 110x100 [bgcolor=#FFFFFF] [border: (20px double #0000FF80)]
       LayoutText {#text} at (0,0) size 0x0
     LayoutText {#text} at (0,0) size 0x0
 layer at (8,304) size 158x540 backgroundClip at (0,0) size 785x600 clip at (0,0) size 785x600
@@ -47,9 +47,9 @@ layer at (8,304) size 158x540 backgroundClip at (0,0) size 785x600 clip at (0,0)
     LayoutText {#text} at (12,268) size 17x4
       text run at (12,268) width 4: " "
     LayoutBlockFlow {DIV} at (10,282) size 138x248 [bgcolor=#808080]
-      LayoutBlockFlow {DIV} at (15,12) size 110x100 [bgcolor=#FFFFFF] [border: (20px solid #0000FF7F)]
+      LayoutBlockFlow {DIV} at (15,12) size 110x100 [bgcolor=#FFFFFF] [border: (20px solid #0000FF80)]
       LayoutText {#text} at (2,122) size 17x4
         text run at (2,122) width 4: " "
-      LayoutBlockFlow {DIV} at (15,136) size 110x100 [bgcolor=#FFFFFF] [border: (20px double #0000FF7F)]
+      LayoutBlockFlow {DIV} at (15,136) size 110x100 [bgcolor=#FFFFFF] [border: (20px double #0000FF80)]
       LayoutText {#text} at (0,0) size 0x0
     LayoutText {#text} at (0,0) size 0x0