Add a runtime flag in WebRuntimeFeatures to enable 'image/webp' accept header

Source/WebCore/bindings/generic/RuntimeEnabledFeatures.h

Index: Source/WebCore/bindings/generic/RuntimeEnabledFeatures.h
diff --git a/Source/WebCore/bindings/generic/RuntimeEnabledFeatures.h b/Source/WebCore/bindings/generic/RuntimeEnabledFeatures.h
index 7e74b66bd9c926f5f4a200e26c4bff815a532e62..af8b2d0ac68eaea46cf1d9d783091baf01adf269 100644
--- a/Source/WebCore/bindings/generic/RuntimeEnabledFeatures.h
+++ b/Source/WebCore/bindings/generic/RuntimeEnabledFeatures.h
@@ -284,6 +284,11 @@ public:
     static void setRequestAutocompleteEnabled(bool isEnabled) { isRequestAutocompleteEnabled = isEnabled; }
 #endif
 
+#if USE(WEBP)

[darin (slow to review), 2013/04/10 23:13:16]

WTF_USE_WEBP is no longer required in Blink.  We can delete that #define.

[urvang (Google), 2013/04/11 00:42:51]

I was having a look at the latest tree, and WTF_USE_WEBP is still defined
(https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit...)
and used elsewhere
(https://code.google.com/p/chromium/codesearch#search/&q=%22USE(WEBP)%22&sq=pa...).

Perhaps, we should have a separate change to remove all the instances at once.

+    static void setWebPInAcceptHeaderEnabled(bool isEnabled) { isWebPInAcceptHeaderEnabled = isEnabled; }
+    static bool webPInAcceptHeaderEnabled() { return isWebPInAcceptHeaderEnabled; }
+#endif
+
 private:
     // Never instantiate.
     RuntimeEnabledFeatures() { }
@@ -391,6 +396,10 @@ private:
     static bool isFontLoadEventsEnabled;
 #endif
 
+#if USE(WEBP)
+    static bool isWebPInAcceptHeaderEnabled;
+#endif
+
 };
 
 } // namespace WebCore