Force ComplexPath if any part of the node requires it

Source/platform/fonts/Font.cpp

Index: Source/platform/fonts/Font.cpp
diff --git a/Source/platform/fonts/Font.cpp b/Source/platform/fonts/Font.cpp
index 49d150c1672e1458f3537ae36f23af97daeb21b1..7b160db42318a195318e611aa822cf913345cbd3 100644
--- a/Source/platform/fonts/Font.cpp
+++ b/Source/platform/fonts/Font.cpp
@@ -298,6 +298,9 @@ CodePath Font::codePath(const TextRun& run) const
     if (run.is8Bit())
         return SimplePath;
 
+    if (run.useComplexCodePath())

[leviw_travelin_and_unemployed, 2014/10/01 20:33:14]

Are you sure you want this check here? Could a RenderText that uses the complex
code path have an 8bit run?

[eae, 2014/10/01 21:16:43]

Yes but then it would be due to a CSS setting in which case the text content is
irrelevant. I could move it up if you prefer though, doesn't hurt in any way.

[leviw_travelin_and_unemployed, 2014/10/01 21:37:28]

I'm not sure I understand. The case I'm thinking is a RenderText with
non-western script that requires complex text, but also breaks up into some 8bit
runs. Isn't the point of this patch that we'll handle all those TextRuns using
the complex path? This as is could still handle 8bit runs as simple in this
case, no?

+        return ComplexPath;
+
     // Start from 0 since drawing and highlighting also measure the characters before run->from.
     return Character::characterRangeCodePath(run.characters16(), run.length());
 }