Bug 1108429 part 3 - Add flag to indicate the existance of ruby. r=roc

--HG--
extra : source : 322ca21457397001c361db0ea766367d19b9b9a1

layout/generic/nsLineLayout.cpp

@@ -77,7 +77,8 @@ nsLineLayout::nsLineLayout(nsPresContext* aPresContext,
     mInFirstLetter(false),
     mHasBullet(false),
     mDirtyNextLine(false),
-    mLineAtStart(false)
+    mLineAtStart(false),
+    mHasRuby(false)
 {
   MOZ_ASSERT(aOuterReflowState, "aOuterReflowState must not be null");
   NS_ASSERTION(aFloatManager || aOuterReflowState->frame->GetType() ==
@@ -1084,6 +1085,9 @@ nsLineLayout::ReflowFrame(nsIFrame* aFrame,
           // nonempty leaf content has been placed
           mLineAtStart = false;
         }
+        if (nsGkAtoms::rubyFrame == frameType) {
+          mHasRuby = true;
+        }
       }
 
       // Place the frame, updating aBounds with the final size and

layout/generic/nsLineLayout.h

@@ -578,6 +578,7 @@ protected:
   bool mHasBullet               : 1;
   bool mDirtyNextLine           : 1;
   bool mLineAtStart             : 1;
+  bool mHasRuby                 : 1;
 
   int32_t mSpanDepth;
 #ifdef DEBUG