Add Pepper TrueType font API call to enumerate fonts in a given family.

content/browser/renderer_host/pepper/pepper_truetype_font_list.h

Index: content/browser/renderer_host/pepper/pepper_truetype_font_list.h
diff --git a/content/browser/renderer_host/pepper/pepper_truetype_font_list.h b/content/browser/renderer_host/pepper/pepper_truetype_font_list.h
index c0ce7827d5329393eebf94aab95a62276ed39677..da944c5007104f57f6cbb3174437cf0f195adcb7 100644
--- a/content/browser/renderer_host/pepper/pepper_truetype_font_list.h
+++ b/content/browser/renderer_host/pepper/pepper_truetype_font_list.h
@@ -8,6 +8,12 @@
 #include <string>
 #include <vector>
 
+namespace ppapi {
+namespace proxy {
+struct SerializedTrueTypeFontDesc;
+}
+}
+
 namespace content {
 
 // Adds font family names on the host platform to the vector of strings.
@@ -16,6 +22,15 @@ namespace content {
 // sure not to call this on a time-critical thread like the UI or I/O threads.
 void GetFontFamilies_SlowBlocking(std::vector<std::string>* font_families);
 
+// Adds font descriptors for fonts on the host platform in the given family to
+// the vector of descriptors.
+//
+// This function is potentially slow (the system may do a bunch of I/O) so be
+// sure not to call this on a time-critical thread like the UI or I/O threads.
+void GetFontsInFamily_SlowBlocking(
+    const std::string& family,
+    std::vector<ppapi::proxy::SerializedTrueTypeFontDesc>* fonts_in_family);
+
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_TRUETYPE_FONT_LIST_H_