The 'lighter' CSS value was not output in STYLE attributes because of a bug in |nsCSSProps::SearchKeywordTableInt|

This routine was stopping on negative values but there are some negative values defined in nsStyleConsts.h

b=137061, r=caillon, sr=kin

content/shared/src/nsCSSProps.cpp

@@ -843,7 +843,7 @@ nsCSSProps::SearchKeywordTableInt(PRInt32 aValue, const PRInt32 aTable[])
 {
   PRInt32 i = 1;
   for (;;) {
-    if (aTable[i] < 0) {
+    if (aTable[i] == -1 && aTable[i-1] == -1) {
       break;
     }
     if (aValue == aTable[i]) {

layout/style/nsCSSProps.cpp

@@ -843,7 +843,7 @@ nsCSSProps::SearchKeywordTableInt(PRInt32 aValue, const PRInt32 aTable[])
 {
   PRInt32 i = 1;
   for (;;) {
-    if (aTable[i] < 0) {
+    if (aTable[i] == -1 && aTable[i-1] == -1) {
       break;
     }
     if (aValue == aTable[i]) {