Update the tcmalloc vendor branch to r144 (gperftools 2.0), and README.chromium.

third_party/tcmalloc/vendor/vsprojects/tmu-static/tmu-static.vcproj

Index: third_party/tcmalloc/vendor/vsprojects/tmu-static/tmu-static.vcproj
diff --git a/third_party/tcmalloc/vendor/vsprojects/tmu-static/tmu-static.vcproj b/third_party/tcmalloc/vendor/vsprojects/tmu-static/tmu-static.vcproj
index 95b8b6c57b6e6c7e1aeadb090942495484c8977c..3b1db3248d851de5e67661da24484e52a8ee6dc4 100644
--- a/third_party/tcmalloc/vendor/vsprojects/tmu-static/tmu-static.vcproj
+++ b/third_party/tcmalloc/vendor/vsprojects/tmu-static/tmu-static.vcproj
@@ -720,7 +720,7 @@
 				RelativePath="..\..\src\base\googleinit.h">
 			</File>
 			<File
-				RelativePath="..\..\src\google\heap-checker.h">
+				RelativePath="..\..\src\gperftools\heap-checker.h">
 			</File>
 			<File
 				RelativePath="..\..\src\heap-profile-table.h">
@@ -729,7 +729,7 @@
 				RelativePath="..\..\src\symbolize.h">
 			</File>
 			<File
-				RelativePath="..\..\src\google\heap-profiler.h">
+				RelativePath="..\..\src\gperftools\heap-profiler.h">
 			</File>
 			<File
 				RelativePath="..\..\src\common.h">
@@ -780,10 +780,10 @@
 				RelativePath="..\..\src\base\spinlock_win32-inl.h">
 			</File>
 			<File
-				RelativePath="..\..\src\google\malloc_extension.h">
+				RelativePath="..\..\src\gperftools\malloc_extension.h">
 			</File>
 			<File
-				RelativePath="..\..\src\google\malloc_hook.h">
+				RelativePath="..\..\src\gperftools\malloc_hook.h">
 			</File>
 			<File
 				RelativePath="..\..\src\malloc_hook-inl.h">
@@ -825,16 +825,16 @@
 				RelativePath="..\..\src\windows\preamble_patcher.h">
 			</File>
 			<File
-				RelativePath="..\..\src\google\profiler.h">
+				RelativePath="..\..\src\gperftools\profiler.h">
 			</File>
 			<File
 				RelativePath="..\..\src\span.h">
 			</File>
 			<File
-				RelativePath="..\..\src\google\stacktrace.h">
+				RelativePath="..\..\src\gperftools\stacktrace.h">
 			</File>
 			<File
-				RelativePath="..\..\src\google\stacktrace_config.h">
+				RelativePath="..\..\src\gperftools\stacktrace_config.h">
 			</File>
 			<File
 				RelativePath="..\..\src\stacktrace_win32-inl.h">