Rename old chromium logtag to chromium_net

This is to make it easier to see what is from the chromium library
and what is from the chromium_net library.

Change-Id: Idb3a660aa7d864d68691743bd15f0ce59cd4dae2
diff --git a/Source/WebKit/android/WebCoreSupport/ChromiumInit.cpp b/Source/WebKit/android/WebCoreSupport/ChromiumInit.cpp
index 500975c..8543c8d 100644
--- a/Source/WebKit/android/WebCoreSupport/ChromiumInit.cpp
+++ b/Source/WebKit/android/WebCoreSupport/ChromiumInit.cpp
@@ -52,7 +52,7 @@
         androidSeverity = ANDROID_LOG_VERBOSE;
         break;
     }
-    android_printLog(androidSeverity, "chromium", "%s:%d: %s", file, line, str.c_str());
+    android_printLog(androidSeverity, "chromium_net", "%s:%d: %s", file, line, str.c_str());
     return false;
 }