Remove obsolete code path that uses double as time stamp for metadata

content/renderer/renderer_blink_platform_impl.cc

Index: content/renderer/renderer_blink_platform_impl.cc
diff --git a/content/renderer/renderer_blink_platform_impl.cc b/content/renderer/renderer_blink_platform_impl.cc
index eee54b92675dae193c4e5f72116a60e02b9f37b4..3ac2bd0a41e944ee8d94fc54060a06f8b9290c4e 100644
--- a/content/renderer/renderer_blink_platform_impl.cc
+++ b/content/renderer/renderer_blink_platform_impl.cc
@@ -340,18 +340,6 @@ RendererBlinkPlatformImpl::prescientNetworking() {
 }
 
 void RendererBlinkPlatformImpl::cacheMetadata(const blink::WebURL& url,
-                                              double response_time,
-                                              const char* data,
-                                              size_t size) {
-  // Let the browser know we generated cacheable metadata for this resource. The
-  // browser may cache it and return it on subsequent responses to speed
-  // the processing of this resource.
-  std::vector<char> copy(data, data + size);
-  RenderThread::Get()->Send(new ViewHostMsg_DidGenerateCacheableMetadata(
-      url, base::Time::FromDoubleT(response_time), copy));
-}
-
-void RendererBlinkPlatformImpl::cacheMetadata(const blink::WebURL& url,
                                               int64 response_time,
                                               const char* data,
                                               size_t size) {