Add SpdyFramer methods for SETTINGS_HEADER_TABLE_SIZE.

This CL lands server change 90723544 by yinjie.

BUG=488484

Review URL: https://codereview.chromium.org/1146533003

Cr-Commit-Position: refs/heads/master@{#330161}

net/spdy/spdy_framer.cc

@@ -161,7 +161,8 @@ SpdyFramer::SpdyFramer(SpdyMajorVersion version)
       enable_compression_(true),
       syn_frame_processed_(false),
       probable_http_response_(false),
-      end_stream_when_done_(false) {
+      end_stream_when_done_(false),
+      header_table_size_bound_(4096) {
   DCHECK_GE(protocol_version_, SPDY_MIN_VERSION);
   DCHECK_LE(protocol_version_, SPDY_MAX_VERSION);
   DCHECK_LE(kMaxControlFrameSize,
@@ -3201,6 +3202,17 @@ bool SpdyFramer::IncrementallyDeliverControlFrameHeaderData(
   return read_successfully;
 }
 
+void SpdyFramer::UpdateHeaderTableSizeSetting(uint32 value) {
+  header_table_size_bound_ = value;
+  GetHpackEncoder()->ApplyHeaderTableSizeSetting(value);
+  GetHpackDecoder()->ApplyHeaderTableSizeSetting(value);
+}
+
+// Return size bound of the header compression table.
+size_t SpdyFramer::header_table_size_bound() const {
+  return header_table_size_bound_;
+}
+
 void SpdyFramer::SerializeNameValueBlockWithoutCompression(
     SpdyFrameBuilder* builder,
     const SpdyNameValueBlock& name_value_block) const {

net/spdy/spdy_framer.h

@@ -590,6 +590,12 @@ class NET_EXPORT_PRIVATE SpdyFramer {
       const char* data,
       size_t len);
 
+  // Updates the maximum size of header compression table.
+  void UpdateHeaderTableSizeSetting(uint32 value);
+
+  // Returns bound of header compression table size.
+  size_t header_table_size_bound() const;
+
  protected:
   // TODO(jgraettinger): Switch to test peer pattern.
   FRIEND_TEST_ALL_PREFIXES(SpdyFramerTest, BasicCompression);
@@ -805,6 +811,9 @@ class NET_EXPORT_PRIVATE SpdyFramer {
   // we know to terminate the stream when the entire header block has been
   // processed.
   bool end_stream_when_done_;
+
+  // Last acknowledged value for SETTINGS_HEADER_TABLE_SIZE.
+  size_t header_table_size_bound_;
 };
 
 }  // namespace net