Switch 'make builddeps' to use HTTPS everywhere.

Makefile

Index: Makefile
diff --git a/Makefile b/Makefile
index d04d9ef494f0ffebf36d9ac168efe3951286181e..6a34a7253afe660068377077c935fa93838690dd 100644
--- a/Makefile
+++ b/Makefile
@@ -490,7 +490,7 @@ gtags.clean:
 # "dependencies" includes also dependencies required for development.
 # Remember to keep these in sync with the DEPS file.
 builddeps:
-	svn checkout --force http://gyp.googlecode.com/svn/trunk build/gyp \
+	svn checkout --force https://gyp.googlecode.com/svn/trunk build/gyp \
 	    --revision 1831
 	if svn info third_party/icu 2>&1 | grep -q icu46 ; then \
 	  svn switch --force \
@@ -501,9 +501,9 @@ builddeps:
 	      https://src.chromium.org/chrome/trunk/deps/third_party/icu52 \
 	      third_party/icu --revision 277999 ; \
 	fi
-	svn checkout --force http://googletest.googlecode.com/svn/trunk \
+	svn checkout --force https://googletest.googlecode.com/svn/trunk \
 	    testing/gtest --revision 692
-	svn checkout --force http://googlemock.googlecode.com/svn/trunk \
+	svn checkout --force https://googlemock.googlecode.com/svn/trunk \
 	    testing/gmock --revision 485
 
 dependencies: builddeps