[Mac] Add a new WebSandboxSupport method to get the display's color space.

public/platform/mac/WebSandboxSupport.h

 /*
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  *
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  * modification, are permitted provided that the following conditions are
  * met:
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@@ skipping 13 matching lines @@
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  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebSandboxSupport_h
 #define WebSandboxSupport_h
 
+typedef struct CGColorSpace* CGColorSpaceRef;
 typedef struct CGFont* CGFontRef;
 
 #ifdef __OBJC__
 @class NSFont;
 #else
 class NSFont;
 #endif
 
 namespace blink {
 
 // Put methods here that are required due to sandbox restrictions.
 class WebSandboxSupport {
 public:
     // Given an input font - |srcFont| [which can't be loaded due to sandbox
     // restrictions]. Return a font belonging to an equivalent font file
     // that can be used to access the font and a unique identifier corresponding
     // to the on-disk font file.
     //
     // If this function succeeds, the caller assumes ownership of the |out|
     // parameter and must call CGFontRelease() to unload it when done.
     //
     // Returns: true on success, false on error.
     virtual bool loadFont(NSFont* srcFont, CGFontRef* out, uint32_t* fontID) = 0;
+
+    // Returns the color space for the current display. The caller does not own

[Avi (use Gerrit), 2014/09/08 20:14:56]

And by "current" you mean "main".

It's rather a bummer that we can't properly support color-spaces per-screen.

[Ken Russell (switch to Gerrit), 2014/09/08 21:34:57]

Noel's actively working on adding per-screen color profile support. This change
looks like an urgent fix for upcoming OS releases.

[Robert Sesek, 2014/09/08 21:37:26]

That's cool! This should make it easier to pipe down, since the SandboxSupport
impl could be hooked up to a IPC message filter.

+    // the result.
+    virtual CGColorSpaceRef displayColorSpace() = 0;
 };
 
 } // namespace blink
 
 #endif