Move StartsWith[ASCII] to base namespace.

media/base/android/media_codec_bridge.cc

Index: media/base/android/media_codec_bridge.cc
diff --git a/media/base/android/media_codec_bridge.cc b/media/base/android/media_codec_bridge.cc
index 14f33002ea83305cd3033322c276545447edf0f0..3d22752159a60e7355b9a765947a9f2a14359249 100644
--- a/media/base/android/media_codec_bridge.cc
+++ b/media/base/android/media_codec_bridge.cc
@@ -246,10 +246,10 @@ bool MediaCodecBridge::IsKnownUnaccelerated(const std::string& mime_type,
   // devices while HW decoder video freezes and distortions are
   // investigated - http://crbug.com/446974.
   if (codec_name.length() > 0) {
-    return (StartsWithASCII(codec_name, "OMX.google.", true) ||
-        StartsWithASCII(codec_name, "OMX.SEC.", true) ||
-        StartsWithASCII(codec_name, "OMX.MTK.", true) ||
-        StartsWithASCII(codec_name, "OMX.Exynos.", true));
+    return (base::StartsWithASCII(codec_name, "OMX.google.", true) ||
+            base::StartsWithASCII(codec_name, "OMX.SEC.", true) ||
+            base::StartsWithASCII(codec_name, "OMX.MTK.", true) ||
+            base::StartsWithASCII(codec_name, "OMX.Exynos.", true));
   }
   return true;
 }