Cleanup: Remove redundant SpdyFramerTest string conversions.

net/spdy/spdy_framer_test.cc

Index: net/spdy/spdy_framer_test.cc
diff --git a/net/spdy/spdy_framer_test.cc b/net/spdy/spdy_framer_test.cc
index 27e7123eb40a5dd65346fe37e0c616aa87ae61be..2a005bb946a6be1f56d64ed0ff4a7fb570576137 100644
--- a/net/spdy/spdy_framer_test.cc
+++ b/net/spdy/spdy_framer_test.cc
@@ -3054,7 +3054,7 @@ TEST_P(SpdyFramerTest, ControlFrameAtMaxSizeLimit) {
 
   // Create a frame at exactly that size.
   string big_value(kBigValueSize, 'x');
-  syn_stream.SetHeader("aa", big_value.c_str());
+  syn_stream.SetHeader("aa", big_value);
   control_frame.reset(framer.SerializeSynStream(syn_stream));
   EXPECT_TRUE(control_frame.get() != NULL);
   EXPECT_EQ(framer.GetControlFrameBufferMaxSize(), control_frame->size());
@@ -3089,7 +3089,7 @@ TEST_P(SpdyFramerTest, ControlFrameTooLarge) {
 
   // Create a frame at exatly that size.
   string big_value(kBigValueSize, 'x');
-  syn_stream.SetHeader("aa", big_value.c_str());
+  syn_stream.SetHeader("aa", big_value);
   // Upstream branches here and wraps SPDY4 with EXPECT_DEBUG_DFATAL. We
   // neither support that in Chromium, nor do we use the same DFATAL (see
   // SpdyFrameBuilder::WriteFramePrefix()).
@@ -3124,7 +3124,7 @@ TEST_P(SpdyFramerTest, TooLargeHeadersFrameUsesContinuation) {
   // enough to cause an overflow.
   const size_t kBigValueSize = framer.GetControlFrameBufferMaxSize();
   string big_value(kBigValueSize, 'x');
-  headers.SetHeader("aa", big_value.c_str());
+  headers.SetHeader("aa", big_value);
   scoped_ptr<SpdyFrame> control_frame(framer.SerializeHeaders(headers));
   EXPECT_TRUE(control_frame.get() != NULL);
   EXPECT_GT(control_frame->size(), framer.GetControlFrameBufferMaxSize());
@@ -3152,7 +3152,7 @@ TEST_P(SpdyFramerTest, TooLargePushPromiseFrameUsesContinuation) {
   // enough to cause an overflow.
   const size_t kBigValueSize = framer.GetControlFrameBufferMaxSize();
   string big_value(kBigValueSize, 'x');
-  push_promise.SetHeader("aa", big_value.c_str());
+  push_promise.SetHeader("aa", big_value);
   scoped_ptr<SpdyFrame> control_frame(
       framer.SerializePushPromise(push_promise));
   EXPECT_TRUE(control_frame.get() != NULL);
@@ -3182,7 +3182,7 @@ TEST_P(SpdyFramerTest, ControlFrameMuchTooLarge) {
   SpdySynStreamIR syn_stream(1);
   syn_stream.set_priority(1);
   syn_stream.set_fin(true);
-  syn_stream.SetHeader("aa", big_value.c_str());
+  syn_stream.SetHeader("aa", big_value);
   scoped_ptr<SpdyFrame> control_frame(framer.SerializeSynStream(syn_stream));
   EXPECT_TRUE(control_frame.get() != NULL);
   TestSpdyVisitor visitor(spdy_version_);