Implement API for accessing fonts installed locally on the system.

third_party/WebKit/public/platform/Platform.h

Index: third_party/WebKit/public/platform/Platform.h
diff --git a/third_party/WebKit/public/platform/Platform.h b/third_party/WebKit/public/platform/Platform.h
index 44d4ec1acee32c906add5f948314222716cbb8f5..edd9adec891ab7e6ca50843dd5587195c3215d69 100644
--- a/third_party/WebKit/public/platform/Platform.h
+++ b/third_party/WebKit/public/platform/Platform.h
@@ -73,6 +73,7 @@ class WebFallbackThemeEngine;
 class WebFileSystem;
 class WebFileUtilities;
 class WebFlingAnimator;
+class WebFontAccess;
 class WebGeofencingProvider;
 class WebGestureCurve;
 class WebGraphicsContext3DProvider;
@@ -611,6 +612,10 @@ public:
 
     virtual WebSyncProvider* backgroundSyncProvider() { return nullptr; }
 
+    // Local Font Access API -----------------------------------------------
+
+    virtual WebFontAccess* fontAccess() { return nullptr; }
+
     // Experimental Framework ----------------------------------------------
 
     virtual WebTrialTokenValidator* trialTokenValidator() { return nullptr; }