Implement padding PUSH_PROMISE and HEADERS frames.

This lands server change 77795511 by raullenchai.

BUG=345769

Review URL: https://codereview.chromium.org/661743003

Cr-Commit-Position: refs/heads/master@{#300713}

net/spdy/spdy_framer.h

@@ -336,7 +336,7 @@ class NET_EXPORT_PRIVATE SpdyFramer {
     SPDY_AUTO_RESET,
     SPDY_READING_COMMON_HEADER,
     SPDY_CONTROL_FRAME_PAYLOAD,
-    SPDY_READ_PADDING_LENGTH,
+    SPDY_READ_DATA_FRAME_PADDING_LENGTH,
     SPDY_CONSUME_PADDING,
     SPDY_IGNORE_REMAINING_PAYLOAD,
     SPDY_FORWARD_STREAM_FRAME,
@@ -601,6 +601,8 @@ class NET_EXPORT_PRIVATE SpdyFramer {
                            UnclosedStreamDataCompressorsOneByteAtATime);
   FRIEND_TEST_ALL_PREFIXES(SpdyFramerTest,
                            UncompressLargerThanFrameBufferInitialSize);
+  FRIEND_TEST_ALL_PREFIXES(SpdyFramerTest,
+                           CreatePushPromiseThenContinuationUncompressed);
   FRIEND_TEST_ALL_PREFIXES(SpdyFramerTest, ReadLargeSettingsFrame);
   FRIEND_TEST_ALL_PREFIXES(SpdyFramerTest,
                            ReadLargeSettingsFrameInSmallChunks);
@@ -634,7 +636,7 @@ class NET_EXPORT_PRIVATE SpdyFramer {
   size_t ProcessControlFrameHeaderBlock(const char* data,
                                         size_t len,
                                         bool is_hpack_header_block);
-  size_t ProcessFramePaddingLength(const char* data, size_t len);
+  size_t ProcessDataFramePaddingLength(const char* data, size_t len);
   size_t ProcessFramePadding(const char* data, size_t len);
   size_t ProcessDataFramePayload(const char* data, size_t len);
   size_t ProcessGoAwayFramePayload(const char* data, size_t len);
@@ -672,7 +674,8 @@ class NET_EXPORT_PRIVATE SpdyFramer {
   void WritePayloadWithContinuation(SpdyFrameBuilder* builder,
                                     const std::string& hpack_encoding,
                                     SpdyStreamId stream_id,
-                                    SpdyFrameType type);
+                                    SpdyFrameType type,
+                                    int padding_payload_len);
 
  private:
   // Deliver the given control frame's uncompressed headers block to the

net/spdy/spdy_protocol.h

@@ -847,7 +847,9 @@ class NET_EXPORT_PRIVATE SpdyHeadersIR : public SpdyFrameWithNameValueBlockIR {
   explicit SpdyHeadersIR(SpdyStreamId stream_id)
       : SpdyFrameWithNameValueBlockIR(stream_id),
         has_priority_(false),
-      priority_(0) {}
+        priority_(0),
+        padded_(false),
+        padding_payload_len_(0) {}
 
   void Visit(SpdyFrameVisitor* visitor) const override;
 
@@ -856,10 +858,24 @@ class NET_EXPORT_PRIVATE SpdyHeadersIR : public SpdyFrameWithNameValueBlockIR {
   uint32 priority() const { return priority_; }
   void set_priority(SpdyPriority priority) { priority_ = priority; }
 
+  bool padded() const { return padded_; }
+  int padding_payload_len() const { return padding_payload_len_; }
+  void set_padding_len(int padding_len) {
+    DCHECK_GT(padding_len, 0);
+    DCHECK_LE(padding_len, kPaddingSizePerFrame);
+    padded_ = true;
+    // The pad field takes one octet on the wire.
+    padding_payload_len_ = padding_len - 1;
+  }
+
  private:
   bool has_priority_;
   // 31-bit priority.
   uint32 priority_;
+
+  bool padded_;
+  int padding_payload_len_;
+
   DISALLOW_COPY_AND_ASSIGN(SpdyHeadersIR);
 };
 
@@ -901,14 +917,30 @@ class NET_EXPORT_PRIVATE SpdyPushPromiseIR
  public:
   SpdyPushPromiseIR(SpdyStreamId stream_id, SpdyStreamId promised_stream_id)
       : SpdyFrameWithNameValueBlockIR(stream_id),
-        promised_stream_id_(promised_stream_id) {}
+        promised_stream_id_(promised_stream_id),
+        padded_(false),
+        padding_payload_len_(0) {}
   SpdyStreamId promised_stream_id() const { return promised_stream_id_; }
   void set_promised_stream_id(SpdyStreamId id) { promised_stream_id_ = id; }
 
   void Visit(SpdyFrameVisitor* visitor) const override;
 
+  bool padded() const { return padded_; }
+  int padding_payload_len() const { return padding_payload_len_; }
+  void set_padding_len(int padding_len) {
+    DCHECK_GT(padding_len, 0);
+    DCHECK_LE(padding_len, kPaddingSizePerFrame);
+    padded_ = true;
+    // The pad field takes one octet on the wire.
+    padding_payload_len_ = padding_len - 1;
+  }
+
  private:
   SpdyStreamId promised_stream_id_;
+
+  bool padded_;
+  int padding_payload_len_;
+
   DISALLOW_COPY_AND_ASSIGN(SpdyPushPromiseIR);
 };