Implemented rest of webkit api/glue code needed for HTML5 media canPlayType().

webkit/api/src/ChromiumBridge.cpp

Index: webkit/api/src/ChromiumBridge.cpp
diff --git a/webkit/api/src/ChromiumBridge.cpp b/webkit/api/src/ChromiumBridge.cpp
index f8d2e99c8e33e06550d7d1888a4d6c3dbc8a25ed..93ac85777008cf59d670831c8301f388d0fb493c 100644
--- a/webkit/api/src/ChromiumBridge.cpp
+++ b/webkit/api/src/ChromiumBridge.cpp
@@ -196,17 +196,20 @@ bool ChromiumBridge::layoutTestMode()
 
 bool ChromiumBridge::isSupportedImageMIMEType(const String& mimeType)
 {
-    return webKitClient()->mimeRegistry()->supportsImageMIMEType(mimeType);
+    return webKitClient()->mimeRegistry()->supportsImageMIMEType(mimeType)
+        != WebMimeRegistry::IsNotSupported;
 }
 
 bool ChromiumBridge::isSupportedJavaScriptMIMEType(const String& mimeType)
 {
-    return webKitClient()->mimeRegistry()->supportsJavaScriptMIMEType(mimeType);
+    return webKitClient()->mimeRegistry()->supportsJavaScriptMIMEType(mimeType)
+        != WebMimeRegistry::IsNotSupported;
 }
 
 bool ChromiumBridge::isSupportedNonImageMIMEType(const String& mimeType)
 {
-    return webKitClient()->mimeRegistry()->supportsNonImageMIMEType(mimeType);
+    return webKitClient()->mimeRegistry()->supportsNonImageMIMEType(mimeType)
+        != WebMimeRegistry::IsNotSupported;
 }
 
 String ChromiumBridge::mimeTypeForExtension(const String& extension)