Removes SpdyHeaderBlock::GetHeader(). No functional change. Not protected.

net/spdy/spdy_header_block.cc

Index: net/spdy/spdy_header_block.cc
diff --git a/net/spdy/spdy_header_block.cc b/net/spdy/spdy_header_block.cc
index e4a3f3dacb43d0389191bb5bd4cf9829ef9d688c..a5937ff393d7658a2d77b06e3adc9380b863f862 100644
--- a/net/spdy/spdy_header_block.cc
+++ b/net/spdy/spdy_header_block.cc
@@ -89,7 +89,9 @@ SpdyHeaderBlock::ValueProxy::ValueProxy(
       storage_(storage),
       lookup_result_(lookup_result),
       key_(key),
-      valid_(true) {}
+      valid_(true) {
+  DVLOG(1) << "Constructing ValueProxy with key: " << key;
+}
 
 SpdyHeaderBlock::ValueProxy::ValueProxy(ValueProxy&& other)
     : block_(other.block_),
@@ -222,11 +224,6 @@ SpdyHeaderBlock::ValueProxy SpdyHeaderBlock::operator[](const StringPiece key) {
   return ValueProxy(&block_, GetStorage(), iter, out_key);
 }
 
-StringPiece SpdyHeaderBlock::GetHeader(const StringPiece key) const {
-  auto iter = block_.find(key);
-  return iter == block_.end() ? StringPiece() : iter->second;
-}
-
 void SpdyHeaderBlock::AppendValueOrAddHeader(const StringPiece key,
                                              const StringPiece value) {
   auto iter = block_.find(key);