Add 'printing' flag to PaintInfo

Source/core/paint/PaintPhase.h

Index: Source/core/paint/PaintPhase.h
diff --git a/Source/core/paint/PaintPhase.h b/Source/core/paint/PaintPhase.h
index e66db71fc4fa9b8a0be2f42c9bc3b1688272485c..1574a1d02fe1cbec76f34ee5cf50ee5d055f72a9 100644
--- a/Source/core/paint/PaintPhase.h
+++ b/Source/core/paint/PaintPhase.h
@@ -57,8 +57,9 @@ enum PaintPhase {
 
 enum PaintBehaviorFlags {
     PaintBehaviorNormal = 0,
-    // TODO(jchaffraix): Remove those 2 once we have migrated to GlobalPaintFlags.
+    // TODO(jchaffraix): Remove those 3 once we have migrated to GlobalPaintFlags.
     PaintBehaviorSelectionOnly = 1 << 0,
+    PaintBehaviorPrintAdaption = 1 << 1,
     PaintBehaviorFlattenCompositingLayers = 1 << 2,
     PaintBehaviorRenderingClipPathAsMask = 1 << 3,
     PaintBehaviorSkipRootBackground = 1 << 4,
@@ -80,7 +81,11 @@ enum GlobalPaintFlag {
     // Used when painting a drag-image or printing in order to
     // ignore the hardware layers and paint the whole tree
     // into the topmost layer.
-    GlobalPaintFlattenCompositingLayers = 1 << 1
+    GlobalPaintFlattenCompositingLayers = 1 << 1,
+    // Used when printing in order to adapt the output to the medium, for
+    // instance by not painting shadows and selections on text, and add
+    // annotations for links.

[Julien - ping for review, 2015/07/15 17:14:25]

Not sure what 'annotation for links' represents.

[fs, 2015/07/15 18:25:58]

When I wrote this I was thinking about:

https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit...

(and the method below it.) Can you think of any term/formulation that would make
that more obvious to you? "(Hyper)Link metadata"?

+    GlobalPaintPrintAdaption = 1 << 2

[Julien - ping for review, 2015/07/15 17:14:25]

Not a huge fan of "print adaption" (first TIL that "adaption" is a word).

The adaption is what I find superfluous. It's really a GlobalPaintWhenPrinting
or something similar.

[fs, 2015/07/15 18:25:58]

"Adaption" (or adaptation for the longer word) seemed fitting long enough [1] in
my head to make me change from the more blunt GlobalPaintPrinting =). Would the
latter be ok enough?

[1] Since what it achieves is essentially an adap(ta)tion from screen media to
print media through various tweaks. 

 };
 
 typedef unsigned GlobalPaintFlags;
@@ -94,6 +99,8 @@ inline PaintBehavior toPaintBehavior(GlobalPaintFlags flags)
         behavior |= PaintBehaviorSelectionOnly;
     if (flags & GlobalPaintFlattenCompositingLayers)
         behavior |= PaintBehaviorFlattenCompositingLayers;
+    if (flags & GlobalPaintPrintAdaption)
+        behavior |= PaintBehaviorPrintAdaption;
     return behavior;
 }
 inline GlobalPaintFlags toGlobalPaintFlags(PaintBehavior behavior)
@@ -103,6 +110,8 @@ inline GlobalPaintFlags toGlobalPaintFlags(PaintBehavior behavior)
         flags |= GlobalPaintSelectionOnly;
     if (behavior & PaintBehaviorFlattenCompositingLayers)
         flags |= GlobalPaintFlattenCompositingLayers;
+    if (behavior & PaintBehaviorPrintAdaption)
+        flags |= GlobalPaintPrintAdaption;
     return flags;
 }