WTF/std normalization: replace WTF::Vector::first() with ::front()

third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.cpp

Index: third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.cpp
diff --git a/third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.cpp b/third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.cpp
index 42ee47843cc8110f404cb7df1890b238649714e2..2f7025183e872986a5d6be858147c6acfa671ba6 100644
--- a/third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.cpp
+++ b/third_party/WebKit/Source/platform/audio/AudioDSPKernelProcessor.cpp
@@ -126,7 +126,7 @@ double AudioDSPKernelProcessor::tailTime() const {
   MutexTryLocker tryLocker(m_processLock);
   if (tryLocker.locked()) {
     // It is expected that all the kernels have the same tailTime.
-    return !m_kernels.isEmpty() ? m_kernels.first()->tailTime() : 0;
+    return !m_kernels.isEmpty() ? m_kernels.front()->tailTime() : 0;
   }
   // Since we don't want to block the Audio Device thread, we return a large
   // value instead of trying to acquire the lock.
@@ -138,7 +138,7 @@ double AudioDSPKernelProcessor::latencyTime() const {
   MutexTryLocker tryLocker(m_processLock);
   if (tryLocker.locked()) {
     // It is expected that all the kernels have the same latencyTime.
-    return !m_kernels.isEmpty() ? m_kernels.first()->latencyTime() : 0;
+    return !m_kernels.isEmpty() ? m_kernels.front()->latencyTime() : 0;
   }
   // Since we don't want to block the Audio Device thread, we return a large
   // value instead of trying to acquire the lock.