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

third_party/WebKit/LayoutTests/platform/linux/fast/borders/mixed-border-styles-radius2-expected.txt

Index: third_party/WebKit/LayoutTests/platform/linux/fast/borders/mixed-border-styles-radius2-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/linux/fast/borders/mixed-border-styles-radius2-expected.txt b/third_party/WebKit/LayoutTests/platform/linux/fast/borders/mixed-border-styles-radius2-expected.txt
index f57008ca14af7f0bb36ad0bf6c7723d20484cad5..ceb070971a24f8b3b33111ce1e6a13e5c923105e 100644
--- a/third_party/WebKit/LayoutTests/platform/linux/fast/borders/mixed-border-styles-radius2-expected.txt
+++ b/third_party/WebKit/LayoutTests/platform/linux/fast/borders/mixed-border-styles-radius2-expected.txt
@@ -3,25 +3,25 @@ layer at (0,0) size 800x600
 layer at (0,0) size 800x406
   LayoutBlockFlow {HTML} at (0,0) size 800x406
     LayoutBlockFlow {BODY} at (8,8) size 784x390
-      LayoutBlockFlow {DIV} at (20,20) size 150x150 [border: (50px solid #0000007F)]
+      LayoutBlockFlow {DIV} at (20,20) size 150x150 [border: (50px solid #00000080)]
       LayoutText {#text} at (190,175) size 4x19
         text run at (190,175) width 4: " "
-      LayoutBlockFlow {DIV} at (214,20) size 150x150 [border: (50px solid #0000007F) (50px double #0000007F) (50px solid #0000007F)]
+      LayoutBlockFlow {DIV} at (214,20) size 150x150 [border: (50px solid #00000080) (50px double #00000080) (50px solid #00000080)]
       LayoutText {#text} at (384,175) size 4x19
         text run at (384,175) width 4: " "
-      LayoutBlockFlow {DIV} at (408,20) size 150x150 [border: (50px solid #0000007F) none (50px solid #0000007F)]
+      LayoutBlockFlow {DIV} at (408,20) size 150x150 [border: (50px solid #00000080) none (50px solid #00000080)]
       LayoutText {#text} at (578,175) size 4x19
         text run at (578,175) width 4: " "
-      LayoutBlockFlow {DIV} at (602,20) size 150x150 [border: (50px solid #0000007F) (50px solid #00000000) (50px solid #0000007F)]
+      LayoutBlockFlow {DIV} at (602,20) size 150x150 [border: (50px solid #00000080) (50px solid #00000000) (50px solid #00000080)]
       LayoutText {#text} at (0,0) size 0x0
-      LayoutBlockFlow {DIV} at (20,215) size 150x150 [border: (50px solid #0000007F) (50px solid #00000000) (50px solid #0000007F)]
+      LayoutBlockFlow {DIV} at (20,215) size 150x150 [border: (50px solid #00000080) (50px solid #00000000) (50px solid #00000080)]
       LayoutText {#text} at (190,370) size 4x19
         text run at (190,370) width 4: " "
-      LayoutBlockFlow {DIV} at (214,215) size 150x150 [border: (50px solid #0000007F) none (50px solid #00000000) (50px solid #0000007F)]
+      LayoutBlockFlow {DIV} at (214,215) size 150x150 [border: (50px solid #00000080) none (50px solid #00000000) (50px solid #00000080)]
       LayoutText {#text} at (384,370) size 4x19
         text run at (384,370) width 4: " "
-      LayoutBlockFlow {DIV} at (408,215) size 150x150 [border: (50px solid #0000007F) none (50px solid #0000007F)]
+      LayoutBlockFlow {DIV} at (408,215) size 150x150 [border: (50px solid #00000080) none (50px solid #00000080)]
       LayoutText {#text} at (578,370) size 4x19
         text run at (578,370) width 4: " "
-      LayoutBlockFlow {DIV} at (602,215) size 150x150 [border: (50px solid #0000007F) none (50px groove #0000007F) (50px solid #0000007F)]
+      LayoutBlockFlow {DIV} at (602,215) size 150x150 [border: (50px solid #00000080) none (50px groove #00000080) (50px solid #00000080)]
       LayoutText {#text} at (0,0) size 0x0