Minor cleanup.

Minor cleanup after https://crrev.com/2217173002 to reduce code divergence.

BUG=488484

Review-Url: https://codereview.chromium.org/2344613002
Cr-Commit-Position: refs/heads/master@{#418734}

net/spdy/hpack/hpack_decoder_interface.h

@@ -56,7 +56,7 @@ class NET_EXPORT_PRIVATE HpackDecoderInterface {
   virtual void SetHeaderTableDebugVisitor(
       std::unique_ptr<HpackHeaderTable::DebugVisitorInterface> visitor) = 0;
 
-  // How much encoded data this decoder is willing to buffer.
+  // Set how much encoded data this decoder is willing to buffer.
   virtual void set_max_decode_buffer_size_bytes(
       size_t max_decode_buffer_size_bytes) = 0;
 };

net/spdy/hpack/hpack_decoder_test.cc

@@ -135,7 +135,7 @@ TEST_P(HpackDecoderTest, AddHeaderDataWithHandleControlFrameHeadersData) {
                                                      second_input.size()));
   // A string which would push the buffer over the threshold is refused.
   const int kThirdInputSize =
-      (kMaxBufferSizeBytes - (first_input.size() + second_input.size())) + 1;
+      kMaxBufferSizeBytes - (first_input.size() + second_input.size()) + 1;
   string third_input = string(kThirdInputSize, 'y');
   ASSERT_GT(first_input.size() + second_input.size() + third_input.size(),
             kMaxBufferSizeBytes);